1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (c) 2020, Linaro Limited
3
4 #include <dt-bindings/soc/qcom,gpr.h>
5 #include <linux/delay.h>
6 #include <linux/jiffies.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/of.h>
10 #include <linux/of_platform.h>
11 #include <linux/sched.h>
12 #include <linux/slab.h>
13 #include <linux/soc/qcom/apr.h>
14 #include <linux/wait.h>
15 #include <sound/soc.h>
16 #include <sound/soc-dapm.h>
17 #include <sound/pcm.h>
18 #include "audioreach.h"
19 #include "q6apm.h"
20
21 /* Graph Management */
22 struct apm_graph_mgmt_cmd {
23 struct apm_module_param_data param_data;
24 uint32_t num_sub_graphs;
25 uint32_t sub_graph_id_list[];
26 } __packed;
27
28 #define APM_GRAPH_MGMT_PSIZE(p, n) ALIGN(struct_size(p, sub_graph_id_list, n), 8)
29
30 static struct q6apm *g_apm;
31
32 int q6apm_send_cmd_sync(struct q6apm *apm, struct gpr_pkt *pkt, uint32_t rsp_opcode)
33 {
34 gpr_device_t *gdev = apm->gdev;
35
36 return audioreach_send_cmd_sync(&gdev->dev, gdev, &apm->result, &apm->lock,
37 NULL, &apm->wait, pkt, rsp_opcode);
38 }
39
40 static struct audioreach_graph *q6apm_get_audioreach_graph(struct q6apm *apm, uint32_t graph_id)
41 {
42 struct audioreach_graph_info *info;
43 struct audioreach_graph *graph;
44 int id;
45
46 mutex_lock(&apm->lock);
47 graph = idr_find(&apm->graph_idr, graph_id);
48 mutex_unlock(&apm->lock);
49
50 if (graph) {
51 kref_get(&graph->refcount);
52 return graph;
53 }
54
55 info = idr_find(&apm->graph_info_idr, graph_id);
56
57 if (!info)
58 return ERR_PTR(-ENODEV);
59
60 graph = kzalloc(sizeof(*graph), GFP_KERNEL);
61 if (!graph)
62 return ERR_PTR(-ENOMEM);
63
64 graph->apm = apm;
65 graph->info = info;
66 graph->id = graph_id;
67
68 graph->graph = audioreach_alloc_graph_pkt(apm, info);
69 if (IS_ERR(graph->graph)) {
70 void *err = graph->graph;
71
72 kfree(graph);
73 return ERR_CAST(err);
74 }
75
76 mutex_lock(&apm->lock);
77 id = idr_alloc(&apm->graph_idr, graph, graph_id, graph_id + 1, GFP_KERNEL);
78 if (id < 0) {
79 dev_err(apm->dev, "Unable to allocate graph id (%d)\n", graph_id);
80 kfree(graph->graph);
81 kfree(graph);
82 mutex_unlock(&apm->lock);
83 return ERR_PTR(id);
84 }
85 mutex_unlock(&apm->lock);
86
87 kref_init(&graph->refcount);
88
89 q6apm_send_cmd_sync(apm, graph->graph, 0);
90
91 return graph;
92 }
93
94 static int audioreach_graph_mgmt_cmd(struct audioreach_graph *graph, uint32_t opcode)
95 {
96 struct audioreach_graph_info *info = graph->info;
97 int num_sub_graphs = info->num_sub_graphs;
98 struct apm_module_param_data *param_data;
99 struct apm_graph_mgmt_cmd *mgmt_cmd;
100 struct audioreach_sub_graph *sg;
101 struct q6apm *apm = graph->apm;
102 int i = 0, rc, payload_size;
103 struct gpr_pkt *pkt;
104
105 payload_size = APM_GRAPH_MGMT_PSIZE(mgmt_cmd, num_sub_graphs);
106
107 pkt = audioreach_alloc_apm_cmd_pkt(payload_size, opcode, 0);
108 if (IS_ERR(pkt))
109 return PTR_ERR(pkt);
110
111 mgmt_cmd = (void *)pkt + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
112
113 mgmt_cmd->num_sub_graphs = num_sub_graphs;
114
115 param_data = &mgmt_cmd->param_data;
116 param_data->module_instance_id = APM_MODULE_INSTANCE_ID;
117 param_data->param_id = APM_PARAM_ID_SUB_GRAPH_LIST;
118 param_data->param_size = payload_size - APM_MODULE_PARAM_DATA_SIZE;
119
120 list_for_each_entry(sg, &info->sg_list, node)
121 mgmt_cmd->sub_graph_id_list[i++] = sg->sub_graph_id;
122
123 rc = q6apm_send_cmd_sync(apm, pkt, 0);
124
125 kfree(pkt);
126
127 return rc;
128 }
129
130 static void q6apm_put_audioreach_graph(struct kref *ref)
131 {
132 struct audioreach_graph *graph;
133 struct q6apm *apm;
134
135 graph = container_of(ref, struct audioreach_graph, refcount);
136 apm = graph->apm;
137
138 audioreach_graph_mgmt_cmd(graph, APM_CMD_GRAPH_CLOSE);
139
140 mutex_lock(&apm->lock);
141 graph = idr_remove(&apm->graph_idr, graph->id);
142 mutex_unlock(&apm->lock);
143
144 kfree(graph->graph);
145 kfree(graph);
146 }
147
148
149 static int q6apm_get_apm_state(struct q6apm *apm)
150 {
151 struct gpr_pkt *pkt;
152
153 pkt = audioreach_alloc_apm_cmd_pkt(0, APM_CMD_GET_SPF_STATE, 0);
154 if (IS_ERR(pkt))
155 return PTR_ERR(pkt);
156
157 q6apm_send_cmd_sync(apm, pkt, APM_CMD_RSP_GET_SPF_STATE);
158
159 kfree(pkt);
160
161 return apm->state;
162 }
163
164 bool q6apm_is_adsp_ready(void)
165 {
166 if (g_apm)
167 return q6apm_get_apm_state(g_apm);
168
169 return false;
170 }
171 EXPORT_SYMBOL_GPL(q6apm_is_adsp_ready);
172
173 static struct audioreach_module *__q6apm_find_module_by_mid(struct q6apm *apm,
174 struct audioreach_graph_info *info,
175 uint32_t mid)
176 {
177 struct audioreach_container *container;
178 struct audioreach_sub_graph *sgs;
179 struct audioreach_module *module;
180
181 list_for_each_entry(sgs, &info->sg_list, node) {
182 list_for_each_entry(container, &sgs->container_list, node) {
183 list_for_each_entry(module, &container->modules_list, node) {
184 if (mid == module->module_id)
185 return module;
186 }
187 }
188 }
189
190 return NULL;
191 }
192
193 int q6apm_graph_media_format_shmem(struct q6apm_graph *graph,
194 struct audioreach_module_config *cfg)
195 {
196 struct audioreach_module *module;
197
198 if (cfg->direction == SNDRV_PCM_STREAM_CAPTURE)
199 module = q6apm_find_module_by_mid(graph, MODULE_ID_RD_SHARED_MEM_EP);
200 else
201 module = q6apm_find_module_by_mid(graph, MODULE_ID_WR_SHARED_MEM_EP);
202
203 if (!module)
204 return -ENODEV;
205
206 audioreach_set_media_format(graph, module, cfg);
207
208 return 0;
209
210 }
211 EXPORT_SYMBOL_GPL(q6apm_graph_media_format_shmem);
212
213 int q6apm_map_memory_regions(struct q6apm_graph *graph, unsigned int dir, phys_addr_t phys,
214 size_t period_sz, unsigned int periods)
215 {
216 struct audioreach_graph_data *data;
217 struct audio_buffer *buf;
218 int cnt;
219 int rc;
220
221 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
222 data = &graph->rx_data;
223 else
224 data = &graph->tx_data;
225
226 mutex_lock(&graph->lock);
227
228 if (data->buf) {
229 mutex_unlock(&graph->lock);
230 return 0;
231 }
232
233 buf = kzalloc(((sizeof(struct audio_buffer)) * periods), GFP_KERNEL);
234 if (!buf) {
235 mutex_unlock(&graph->lock);
236 return -ENOMEM;
237 }
238
239 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
240 data = &graph->rx_data;
241 else
242 data = &graph->tx_data;
243
244 data->buf = buf;
245
246 buf[0].phys = phys;
247 buf[0].size = period_sz;
248
249 for (cnt = 1; cnt < periods; cnt++) {
250 if (period_sz > 0) {
251 buf[cnt].phys = buf[0].phys + (cnt * period_sz);
252 buf[cnt].size = period_sz;
253 }
254 }
255 data->num_periods = periods;
256
257 mutex_unlock(&graph->lock);
258
259 rc = audioreach_map_memory_regions(graph, dir, period_sz, periods, 1);
260 if (rc < 0) {
261 dev_err(graph->dev, "Memory_map_regions failed\n");
262 audioreach_graph_free_buf(graph);
263 }
264
265 return rc;
266 }
267 EXPORT_SYMBOL_GPL(q6apm_map_memory_regions);
268
269 int q6apm_unmap_memory_regions(struct q6apm_graph *graph, unsigned int dir)
270 {
271 struct apm_cmd_shared_mem_unmap_regions *cmd;
272 struct audioreach_graph_data *data;
273 struct gpr_pkt *pkt;
274 int rc;
275
276 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
277 data = &graph->rx_data;
278 else
279 data = &graph->tx_data;
280
281 if (!data->mem_map_handle)
282 return 0;
283
284 pkt = audioreach_alloc_apm_pkt(sizeof(*cmd), APM_CMD_SHARED_MEM_UNMAP_REGIONS, dir,
285 graph->port->id);
286 if (IS_ERR(pkt))
287 return PTR_ERR(pkt);
288
289 cmd = (void *)pkt + GPR_HDR_SIZE;
290 cmd->mem_map_handle = data->mem_map_handle;
291
292 rc = audioreach_graph_send_cmd_sync(graph, pkt, APM_CMD_SHARED_MEM_UNMAP_REGIONS);
293 kfree(pkt);
294
295 audioreach_graph_free_buf(graph);
296
297 return rc;
298 }
299 EXPORT_SYMBOL_GPL(q6apm_unmap_memory_regions);
300
301 int q6apm_remove_initial_silence(struct device *dev, struct q6apm_graph *graph, uint32_t samples)
302 {
303 struct audioreach_module *module;
304
305 module = q6apm_find_module_by_mid(graph, MODULE_ID_PLACEHOLDER_DECODER);
306 if (!module)
307 return -ENODEV;
308
309 return audioreach_send_u32_param(graph, module, PARAM_ID_REMOVE_INITIAL_SILENCE, samples);
310 }
311 EXPORT_SYMBOL_GPL(q6apm_remove_initial_silence);
312
313 int q6apm_remove_trailing_silence(struct device *dev, struct q6apm_graph *graph, uint32_t samples)
314 {
315 struct audioreach_module *module;
316
317 module = q6apm_find_module_by_mid(graph, MODULE_ID_PLACEHOLDER_DECODER);
318 if (!module)
319 return -ENODEV;
320
321 return audioreach_send_u32_param(graph, module, PARAM_ID_REMOVE_TRAILING_SILENCE, samples);
322 }
323 EXPORT_SYMBOL_GPL(q6apm_remove_trailing_silence);
324
325 int q6apm_enable_compress_module(struct device *dev, struct q6apm_graph *graph, bool en)
326 {
327 struct audioreach_module *module;
328
329 module = q6apm_find_module_by_mid(graph, MODULE_ID_PLACEHOLDER_DECODER);
330 if (!module)
331 return -ENODEV;
332
333 return audioreach_send_u32_param(graph, module, PARAM_ID_MODULE_ENABLE, en);
334 }
335 EXPORT_SYMBOL_GPL(q6apm_enable_compress_module);
336
337 int q6apm_set_real_module_id(struct device *dev, struct q6apm_graph *graph,
338 uint32_t codec_id)
339 {
340 struct audioreach_module *module;
341 uint32_t module_id;
342
343 module = q6apm_find_module_by_mid(graph, MODULE_ID_PLACEHOLDER_DECODER);
344 if (!module)
345 return -ENODEV;
346
347 switch (codec_id) {
348 case SND_AUDIOCODEC_MP3:
349 module_id = MODULE_ID_MP3_DECODE;
350 break;
351 case SND_AUDIOCODEC_AAC:
352 module_id = MODULE_ID_AAC_DEC;
353 break;
354 case SND_AUDIOCODEC_FLAC:
355 module_id = MODULE_ID_FLAC_DEC;
356 break;
357 default:
358 return -EINVAL;
359 }
360
361 return audioreach_send_u32_param(graph, module, PARAM_ID_REAL_MODULE_ID,
362 module_id);
363 }
364 EXPORT_SYMBOL_GPL(q6apm_set_real_module_id);
365
366 int q6apm_graph_media_format_pcm(struct q6apm_graph *graph, struct audioreach_module_config *cfg)
367 {
368 struct audioreach_graph_info *info = graph->info;
369 struct audioreach_sub_graph *sgs;
370 struct audioreach_container *container;
371 struct audioreach_module *module;
372
373 list_for_each_entry(sgs, &info->sg_list, node) {
374 list_for_each_entry(container, &sgs->container_list, node) {
375 list_for_each_entry(module, &container->modules_list, node) {
376 if ((module->module_id == MODULE_ID_WR_SHARED_MEM_EP) ||
377 (module->module_id == MODULE_ID_RD_SHARED_MEM_EP))
378 continue;
379
380 audioreach_set_media_format(graph, module, cfg);
381 }
382 }
383 }
384
385 return 0;
386
387 }
388 EXPORT_SYMBOL_GPL(q6apm_graph_media_format_pcm);
389
390 static int q6apm_graph_get_tx_shmem_module_iid(struct q6apm_graph *graph)
391 {
392 struct audioreach_module *module;
393
394 module = q6apm_find_module_by_mid(graph, MODULE_ID_RD_SHARED_MEM_EP);
395 if (!module)
396 return -ENODEV;
397
398 return module->instance_id;
399
400 }
401
402 int q6apm_graph_get_rx_shmem_module_iid(struct q6apm_graph *graph)
403 {
404 struct audioreach_module *module;
405
406 module = q6apm_find_module_by_mid(graph, MODULE_ID_WR_SHARED_MEM_EP);
407 if (!module)
408 return -ENODEV;
409
410 return module->instance_id;
411
412 }
413 EXPORT_SYMBOL_GPL(q6apm_graph_get_rx_shmem_module_iid);
414
415 int q6apm_write_async(struct q6apm_graph *graph, uint32_t len, uint32_t msw_ts,
416 uint32_t lsw_ts, uint32_t wflags)
417 {
418 struct apm_data_cmd_wr_sh_mem_ep_data_buffer_v2 *write_buffer;
419 struct audio_buffer *ab;
420 struct gpr_pkt *pkt;
421 int rc, iid;
422
423 iid = q6apm_graph_get_rx_shmem_module_iid(graph);
424 pkt = audioreach_alloc_pkt(sizeof(*write_buffer), DATA_CMD_WR_SH_MEM_EP_DATA_BUFFER_V2,
425 graph->rx_data.dsp_buf | (len << APM_WRITE_TOKEN_LEN_SHIFT),
426 graph->port->id, iid);
427 if (IS_ERR(pkt))
428 return PTR_ERR(pkt);
429
430 write_buffer = (void *)pkt + GPR_HDR_SIZE;
431
432 mutex_lock(&graph->lock);
433 ab = &graph->rx_data.buf[graph->rx_data.dsp_buf];
434
435 write_buffer->buf_addr_lsw = lower_32_bits(ab->phys);
436 write_buffer->buf_addr_msw = upper_32_bits(ab->phys);
437 write_buffer->buf_size = len;
438 write_buffer->timestamp_lsw = lsw_ts;
439 write_buffer->timestamp_msw = msw_ts;
440 write_buffer->mem_map_handle = graph->rx_data.mem_map_handle;
441 write_buffer->flags = wflags;
442
443 graph->rx_data.dsp_buf++;
444
445 if (graph->rx_data.dsp_buf >= graph->rx_data.num_periods)
446 graph->rx_data.dsp_buf = 0;
447
448 mutex_unlock(&graph->lock);
449
450 rc = gpr_send_port_pkt(graph->port, pkt);
451
452 kfree(pkt);
453
454 return rc;
455 }
456 EXPORT_SYMBOL_GPL(q6apm_write_async);
457
458 int q6apm_read(struct q6apm_graph *graph)
459 {
460 struct data_cmd_rd_sh_mem_ep_data_buffer_v2 *read_buffer;
461 struct audioreach_graph_data *port;
462 struct audio_buffer *ab;
463 struct gpr_pkt *pkt;
464 int rc, iid;
465
466 iid = q6apm_graph_get_tx_shmem_module_iid(graph);
467 pkt = audioreach_alloc_pkt(sizeof(*read_buffer), DATA_CMD_RD_SH_MEM_EP_DATA_BUFFER_V2,
468 graph->tx_data.dsp_buf, graph->port->id, iid);
469 if (IS_ERR(pkt))
470 return PTR_ERR(pkt);
471
472 read_buffer = (void *)pkt + GPR_HDR_SIZE;
473
474 mutex_lock(&graph->lock);
475 port = &graph->tx_data;
476 ab = &port->buf[port->dsp_buf];
477
478 read_buffer->buf_addr_lsw = lower_32_bits(ab->phys);
479 read_buffer->buf_addr_msw = upper_32_bits(ab->phys);
480 read_buffer->mem_map_handle = port->mem_map_handle;
481 read_buffer->buf_size = ab->size;
482
483 port->dsp_buf++;
484
485 if (port->dsp_buf >= port->num_periods)
486 port->dsp_buf = 0;
487
488 mutex_unlock(&graph->lock);
489
490 rc = gpr_send_port_pkt(graph->port, pkt);
491 kfree(pkt);
492
493 return rc;
494 }
495 EXPORT_SYMBOL_GPL(q6apm_read);
496
497 static int graph_callback(struct gpr_resp_pkt *data, void *priv, int op)
498 {
499 struct data_cmd_rsp_rd_sh_mem_ep_data_buffer_done_v2 *rd_done;
500 struct data_cmd_rsp_wr_sh_mem_ep_data_buffer_done_v2 *done;
501 struct apm_cmd_rsp_shared_mem_map_regions *rsp;
502 struct gpr_ibasic_rsp_result_t *result;
503 struct q6apm_graph *graph = priv;
504 struct gpr_hdr *hdr = &data->hdr;
505 struct device *dev = graph->dev;
506 uint32_t client_event;
507 phys_addr_t phys;
508 int token;
509
510 result = data->payload;
511
512 switch (hdr->opcode) {
513 case DATA_CMD_RSP_WR_SH_MEM_EP_DATA_BUFFER_DONE_V2:
514 if (!graph->ar_graph)
515 break;
516 client_event = APM_CLIENT_EVENT_DATA_WRITE_DONE;
517 mutex_lock(&graph->lock);
518 token = hdr->token & APM_WRITE_TOKEN_MASK;
519
520 done = data->payload;
521 phys = graph->rx_data.buf[token].phys;
522 mutex_unlock(&graph->lock);
523
524 if (lower_32_bits(phys) == done->buf_addr_lsw &&
525 upper_32_bits(phys) == done->buf_addr_msw) {
526 graph->result.opcode = hdr->opcode;
527 graph->result.status = done->status;
528 if (graph->cb)
529 graph->cb(client_event, hdr->token, data->payload, graph->priv);
530 } else {
531 dev_err(dev, "WR BUFF Unexpected addr %08x-%08x\n", done->buf_addr_lsw,
532 done->buf_addr_msw);
533 }
534
535 break;
536 case APM_CMD_RSP_SHARED_MEM_MAP_REGIONS:
537 graph->result.opcode = hdr->opcode;
538 graph->result.status = 0;
539 rsp = data->payload;
540
541 if (hdr->token == SNDRV_PCM_STREAM_PLAYBACK)
542 graph->rx_data.mem_map_handle = rsp->mem_map_handle;
543 else
544 graph->tx_data.mem_map_handle = rsp->mem_map_handle;
545
546 wake_up(&graph->cmd_wait);
547 break;
548 case DATA_CMD_RSP_RD_SH_MEM_EP_DATA_BUFFER_V2:
549 if (!graph->ar_graph)
550 break;
551 client_event = APM_CLIENT_EVENT_DATA_READ_DONE;
552 mutex_lock(&graph->lock);
553 rd_done = data->payload;
554 phys = graph->tx_data.buf[hdr->token].phys;
555 mutex_unlock(&graph->lock);
556
557 if (upper_32_bits(phys) == rd_done->buf_addr_msw &&
558 lower_32_bits(phys) == rd_done->buf_addr_lsw) {
559 graph->result.opcode = hdr->opcode;
560 graph->result.status = rd_done->status;
561 if (graph->cb)
562 graph->cb(client_event, hdr->token, data->payload, graph->priv);
563 } else {
564 dev_err(dev, "RD BUFF Unexpected addr %08x-%08x\n", rd_done->buf_addr_lsw,
565 rd_done->buf_addr_msw);
566 }
567 break;
568 case DATA_CMD_WR_SH_MEM_EP_EOS_RENDERED:
569 client_event = APM_CLIENT_EVENT_CMD_EOS_DONE;
570 if (graph->cb)
571 graph->cb(client_event, hdr->token, data->payload, graph->priv);
572 break;
573 case GPR_BASIC_RSP_RESULT:
574 switch (result->opcode) {
575 case APM_CMD_SHARED_MEM_UNMAP_REGIONS:
576 graph->result.opcode = result->opcode;
577 graph->result.status = 0;
578 if (hdr->token == SNDRV_PCM_STREAM_PLAYBACK)
579 graph->rx_data.mem_map_handle = 0;
580 else
581 graph->tx_data.mem_map_handle = 0;
582
583 wake_up(&graph->cmd_wait);
584 break;
585 case APM_CMD_SHARED_MEM_MAP_REGIONS:
586 case DATA_CMD_WR_SH_MEM_EP_MEDIA_FORMAT:
587 case APM_CMD_SET_CFG:
588 graph->result.opcode = result->opcode;
589 graph->result.status = result->status;
590 if (result->status)
591 dev_err(dev, "Error (%d) Processing 0x%08x cmd\n",
592 result->status, result->opcode);
593 wake_up(&graph->cmd_wait);
594 break;
595 default:
596 break;
597 }
598 break;
599 default:
600 break;
601 }
602 return 0;
603 }
604
605 struct q6apm_graph *q6apm_graph_open(struct device *dev, q6apm_cb cb,
606 void *priv, int graph_id)
607 {
608 struct q6apm *apm = dev_get_drvdata(dev->parent);
609 struct audioreach_graph *ar_graph;
610 struct q6apm_graph *graph;
611 int ret;
612
613 ar_graph = q6apm_get_audioreach_graph(apm, graph_id);
614 if (IS_ERR(ar_graph)) {
615 dev_err(dev, "No graph found with id %d\n", graph_id);
616 return ERR_CAST(ar_graph);
617 }
618
619 graph = kzalloc(sizeof(*graph), GFP_KERNEL);
620 if (!graph) {
621 ret = -ENOMEM;
622 goto put_ar_graph;
623 }
624
625 graph->apm = apm;
626 graph->priv = priv;
627 graph->cb = cb;
628 graph->info = ar_graph->info;
629 graph->ar_graph = ar_graph;
630 graph->id = ar_graph->id;
631 graph->dev = dev;
632
633 mutex_init(&graph->lock);
634 init_waitqueue_head(&graph->cmd_wait);
635
636 graph->port = gpr_alloc_port(apm->gdev, dev, graph_callback, graph);
637 if (IS_ERR(graph->port)) {
638 ret = PTR_ERR(graph->port);
639 goto free_graph;
640 }
641
642 return graph;
643
644 free_graph:
645 kfree(graph);
646 put_ar_graph:
647 kref_put(&ar_graph->refcount, q6apm_put_audioreach_graph);
648 return ERR_PTR(ret);
649 }
650 EXPORT_SYMBOL_GPL(q6apm_graph_open);
651
652 int q6apm_graph_close(struct q6apm_graph *graph)
653 {
654 struct audioreach_graph *ar_graph = graph->ar_graph;
655
656 graph->ar_graph = NULL;
657 kref_put(&ar_graph->refcount, q6apm_put_audioreach_graph);
658 gpr_free_port(graph->port);
659 kfree(graph);
660
661 return 0;
662 }
663 EXPORT_SYMBOL_GPL(q6apm_graph_close);
664
665 int q6apm_graph_prepare(struct q6apm_graph *graph)
666 {
667 return audioreach_graph_mgmt_cmd(graph->ar_graph, APM_CMD_GRAPH_PREPARE);
668 }
669 EXPORT_SYMBOL_GPL(q6apm_graph_prepare);
670
671 int q6apm_graph_start(struct q6apm_graph *graph)
672 {
673 struct audioreach_graph *ar_graph = graph->ar_graph;
674 int ret = 0;
675
676 if (ar_graph->start_count == 0)
677 ret = audioreach_graph_mgmt_cmd(ar_graph, APM_CMD_GRAPH_START);
678
679 ar_graph->start_count++;
680
681 return ret;
682 }
683 EXPORT_SYMBOL_GPL(q6apm_graph_start);
684
685 int q6apm_graph_stop(struct q6apm_graph *graph)
686 {
687 struct audioreach_graph *ar_graph = graph->ar_graph;
688
689 if (--ar_graph->start_count > 0)
690 return 0;
691
692 return audioreach_graph_mgmt_cmd(ar_graph, APM_CMD_GRAPH_STOP);
693 }
694 EXPORT_SYMBOL_GPL(q6apm_graph_stop);
695
696 int q6apm_graph_flush(struct q6apm_graph *graph)
697 {
698 return audioreach_graph_mgmt_cmd(graph->ar_graph, APM_CMD_GRAPH_FLUSH);
699 }
700 EXPORT_SYMBOL_GPL(q6apm_graph_flush);
701
702 static int q6apm_audio_probe(struct snd_soc_component *component)
703 {
704 return audioreach_tplg_init(component);
705 }
706
707 static void q6apm_audio_remove(struct snd_soc_component *component)
708 {
709 /* remove topology */
710 snd_soc_tplg_component_remove(component);
711 }
712
713 #define APM_AUDIO_DRV_NAME "q6apm-audio"
714
715 static const struct snd_soc_component_driver q6apm_audio_component = {
716 .name = APM_AUDIO_DRV_NAME,
717 .probe = q6apm_audio_probe,
718 .remove = q6apm_audio_remove,
719 };
720
721 static int apm_probe(gpr_device_t *gdev)
722 {
723 struct device *dev = &gdev->dev;
724 struct q6apm *apm;
725 int ret;
726
727 apm = devm_kzalloc(dev, sizeof(*apm), GFP_KERNEL);
728 if (!apm)
729 return -ENOMEM;
730
731 dev_set_drvdata(dev, apm);
732
733 mutex_init(&apm->lock);
734 apm->dev = dev;
735 apm->gdev = gdev;
736 init_waitqueue_head(&apm->wait);
737
738 INIT_LIST_HEAD(&apm->widget_list);
739 idr_init(&apm->graph_idr);
740 idr_init(&apm->graph_info_idr);
741 idr_init(&apm->sub_graphs_idr);
742 idr_init(&apm->containers_idr);
743
744 idr_init(&apm->modules_idr);
745
746 g_apm = apm;
747
748 q6apm_get_apm_state(apm);
749
750 ret = devm_snd_soc_register_component(dev, &q6apm_audio_component, NULL, 0);
751 if (ret < 0) {
752 dev_err(dev, "failed to register q6apm: %d\n", ret);
753 return ret;
754 }
755
756 return of_platform_populate(dev->of_node, NULL, NULL, dev);
757 }
758
759 struct audioreach_module *q6apm_find_module_by_mid(struct q6apm_graph *graph, uint32_t mid)
760 {
761 struct audioreach_graph_info *info = graph->info;
762 struct q6apm *apm = graph->apm;
763
764 return __q6apm_find_module_by_mid(apm, info, mid);
765
766 }
767
768 static int apm_callback(struct gpr_resp_pkt *data, void *priv, int op)
769 {
770 gpr_device_t *gdev = priv;
771 struct q6apm *apm = dev_get_drvdata(&gdev->dev);
772 struct device *dev = &gdev->dev;
773 struct gpr_ibasic_rsp_result_t *result;
774 struct gpr_hdr *hdr = &data->hdr;
775
776 result = data->payload;
777
778 switch (hdr->opcode) {
779 case APM_CMD_RSP_GET_SPF_STATE:
780 apm->result.opcode = hdr->opcode;
781 apm->result.status = 0;
782 /* First word of result it state */
783 apm->state = result->opcode;
784 wake_up(&apm->wait);
785 break;
786 case GPR_BASIC_RSP_RESULT:
787 switch (result->opcode) {
788 case APM_CMD_GRAPH_START:
789 case APM_CMD_GRAPH_OPEN:
790 case APM_CMD_GRAPH_PREPARE:
791 case APM_CMD_GRAPH_CLOSE:
792 case APM_CMD_GRAPH_FLUSH:
793 case APM_CMD_GRAPH_STOP:
794 case APM_CMD_SET_CFG:
795 apm->result.opcode = result->opcode;
796 apm->result.status = result->status;
797 if (result->status)
798 dev_err(dev, "Error (%d) Processing 0x%08x cmd\n", result->status,
799 result->opcode);
800 wake_up(&apm->wait);
801 break;
802 default:
803 break;
804 }
805 break;
806 default:
807 break;
808 }
809
810 return 0;
811 }
812
813 #ifdef CONFIG_OF
814 static const struct of_device_id apm_device_id[] = {
815 { .compatible = "qcom,q6apm" },
816 {},
817 };
818 MODULE_DEVICE_TABLE(of, apm_device_id);
819 #endif
820
821 static gpr_driver_t apm_driver = {
822 .probe = apm_probe,
823 .gpr_callback = apm_callback,
824 .driver = {
825 .name = "qcom-apm",
826 .of_match_table = of_match_ptr(apm_device_id),
827 },
828 };
829
830 module_gpr_driver(apm_driver);
831 MODULE_DESCRIPTION("Audio Process Manager");
832 MODULE_LICENSE("GPL");
833
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