]>
Commit | Line | Data |
---|---|---|
fffa1cca VK |
1 | /* |
2 | * intel_sst_stream.c - Intel SST Driver for audio engine | |
3 | * | |
4 | * Copyright (C) 2008-10 Intel Corp | |
5 | * Authors: Vinod Koul <vinod.koul@intel.com> | |
6 | * Harsha Priya <priya.harsha@intel.com> | |
7 | * Dharageswari R <dharageswari.r@intel.com> | |
8 | * KP Jeeja <jeeja.kp@intel.com> | |
9 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; version 2 of the License. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along | |
21 | * with this program; if not, write to the Free Software Foundation, Inc., | |
22 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
23 | * | |
24 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
25 | * | |
26 | * This file contains the stream operations of SST driver | |
27 | */ | |
28 | ||
29 | #include <linux/pci.h> | |
30 | #include <linux/firmware.h> | |
31 | #include <linux/sched.h> | |
32 | #include "intel_sst_ioctl.h" | |
33 | #include "intel_sst.h" | |
34 | #include "intel_sst_fw_ipc.h" | |
35 | #include "intel_sst_common.h" | |
36 | ||
37 | /* | |
38 | * sst_check_device_type - Check the medfield device type | |
39 | * | |
40 | * @device: Device to be checked | |
41 | * @num_ch: Number of channels queried | |
42 | * @pcm_slot: slot to be enabled for this device | |
43 | * | |
44 | * This checks the deivce against the map and calculates pcm_slot value | |
45 | */ | |
46 | int sst_check_device_type(u32 device, u32 num_chan, u32 *pcm_slot) | |
47 | { | |
48 | if (device > MAX_NUM_STREAMS_MFLD) { | |
49 | pr_debug("sst: device type invalid %d\n", device); | |
50 | return -EINVAL; | |
51 | } | |
52 | if (sst_drv_ctx->streams[device].status == STREAM_UN_INIT) { | |
53 | if (device == SND_SST_DEVICE_VIBRA && num_chan == 1) | |
54 | *pcm_slot = 0x10; | |
55 | else if (device == SND_SST_DEVICE_HAPTIC && num_chan == 1) | |
56 | *pcm_slot = 0x20; | |
57 | else if (device == SND_SST_DEVICE_IHF && num_chan == 1) | |
58 | *pcm_slot = 0x04; | |
59 | else if (device == SND_SST_DEVICE_IHF && num_chan == 2) | |
60 | *pcm_slot = 0x0C; | |
61 | else if (device == SND_SST_DEVICE_HEADSET && num_chan == 1) | |
62 | *pcm_slot = 0x01; | |
63 | else if (device == SND_SST_DEVICE_HEADSET && num_chan == 2) | |
64 | *pcm_slot = 0x03; | |
65 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 1) | |
66 | *pcm_slot = 0x01; | |
67 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 2) | |
68 | *pcm_slot = 0x03; | |
69 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 3) | |
70 | *pcm_slot = 0x07; | |
71 | else if (device == SND_SST_DEVICE_CAPTURE && num_chan == 4) | |
72 | *pcm_slot = 0x0F; | |
73 | else { | |
74 | pr_debug("sst: No condition satisfied.. ret err\n"); | |
75 | return -EINVAL; | |
76 | } | |
77 | } else { | |
78 | pr_debug("sst: this stream state is not uni-init, is %d\n", | |
79 | sst_drv_ctx->streams[device].status); | |
80 | return -EBADRQC; | |
81 | } | |
82 | pr_debug("sst: returning slot %x\n", *pcm_slot); | |
83 | return 0; | |
84 | } | |
85 | /** | |
86 | * get_mrst_stream_id - gets a new stream id for use | |
87 | * | |
88 | * This functions searches the current streams and allocated an empty stream | |
89 | * lock stream_lock required to be held before calling this | |
90 | */ | |
91 | static unsigned int get_mrst_stream_id(void) | |
92 | { | |
93 | int i; | |
94 | ||
95 | for (i = 1; i <= MAX_NUM_STREAMS_MRST; i++) { | |
96 | if (sst_drv_ctx->streams[i].status == STREAM_UN_INIT) | |
97 | return i; | |
98 | } | |
99 | pr_debug("sst: Didnt find empty stream for mrst\n"); | |
100 | return -EBUSY; | |
101 | } | |
102 | ||
103 | /** | |
104 | * sst_alloc_stream - Send msg for a new stream ID | |
105 | * | |
106 | * @params: stream params | |
107 | * @stream_ops: operation of stream PB/capture | |
108 | * @codec: codec for stream | |
109 | * @device: device stream to be allocated for | |
110 | * | |
111 | * This function is called by any function which wants to start | |
112 | * a new stream. This also check if a stream exists which is idle | |
113 | * it initializes idle stream id to this request | |
114 | */ | |
115 | int sst_alloc_stream(char *params, unsigned int stream_ops, | |
116 | u8 codec, unsigned int device) | |
117 | { | |
118 | struct ipc_post *msg = NULL; | |
119 | struct snd_sst_alloc_params alloc_param; | |
7915c0d4 VK |
120 | unsigned int pcm_slot = 0, num_ch; |
121 | int str_id; | |
fffa1cca VK |
122 | struct snd_sst_stream_params *sparams; |
123 | struct stream_info *str_info; | |
124 | ||
125 | pr_debug("SST DBG:entering sst_alloc_stream\n"); | |
126 | pr_debug("SST DBG:%d %d %d\n", stream_ops, codec, device); | |
127 | ||
128 | BUG_ON(!params); | |
129 | sparams = (struct snd_sst_stream_params *)params; | |
130 | num_ch = sparams->uc.pcm_params.num_chan; | |
131 | /*check the device type*/ | |
132 | if (sst_drv_ctx->pci_id == SST_MFLD_PCI_ID) { | |
133 | if (sst_check_device_type(device, num_ch, &pcm_slot)) | |
134 | return -EINVAL; | |
135 | mutex_lock(&sst_drv_ctx->stream_lock); | |
136 | str_id = device; | |
137 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
138 | pr_debug("SST_DBG: slot %x\n", pcm_slot); | |
139 | } else { | |
140 | mutex_lock(&sst_drv_ctx->stream_lock); | |
141 | str_id = get_mrst_stream_id(); | |
142 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
143 | if (str_id <= 0) | |
144 | return -EBUSY; | |
145 | } | |
146 | /*allocate device type context*/ | |
147 | sst_init_stream(&sst_drv_ctx->streams[str_id], codec, | |
148 | str_id, stream_ops, pcm_slot, device); | |
149 | /* send msg to FW to allocate a stream */ | |
150 | if (sst_create_large_msg(&msg)) | |
151 | return -ENOMEM; | |
152 | ||
153 | sst_fill_header(&msg->header, IPC_IA_ALLOC_STREAM, 1, str_id); | |
154 | msg->header.part.data = sizeof(alloc_param) + sizeof(u32); | |
155 | alloc_param.str_type.codec_type = codec; | |
156 | alloc_param.str_type.str_type = SST_STREAM_TYPE_MUSIC; | |
157 | alloc_param.str_type.operation = stream_ops; | |
158 | alloc_param.str_type.protected_str = 0; /* non drm */ | |
159 | alloc_param.str_type.time_slots = pcm_slot; | |
160 | alloc_param.str_type.result = alloc_param.str_type.reserved = 0; | |
161 | memcpy(&alloc_param.stream_params, params, | |
162 | sizeof(struct snd_sst_stream_params)); | |
163 | ||
164 | memcpy(msg->mailbox_data, &msg->header, sizeof(u32)); | |
165 | memcpy(msg->mailbox_data + sizeof(u32), &alloc_param, | |
166 | sizeof(alloc_param)); | |
167 | str_info = &sst_drv_ctx->streams[str_id]; | |
168 | str_info->ctrl_blk.condition = false; | |
169 | str_info->ctrl_blk.ret_code = 0; | |
170 | str_info->ctrl_blk.on = true; | |
171 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
172 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
173 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
174 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
175 | pr_debug("SST DBG:alloc stream done\n"); | |
176 | return str_id; | |
177 | } | |
178 | ||
179 | ||
180 | /* | |
181 | * sst_alloc_stream_response - process alloc reply | |
182 | * | |
183 | * @str_id: stream id for which the stream has been allocated | |
184 | * @resp the stream response from firware | |
185 | * | |
186 | * This function is called by firmware as a response to stream allcoation | |
187 | * request | |
188 | */ | |
189 | int sst_alloc_stream_response(unsigned int str_id, | |
190 | struct snd_sst_alloc_response *resp) | |
191 | { | |
192 | int retval = 0; | |
193 | struct stream_info *str_info; | |
194 | struct snd_sst_lib_download *lib_dnld; | |
195 | ||
196 | pr_debug("SST DEBUG: stream number given = %d\n", str_id); | |
197 | str_info = &sst_drv_ctx->streams[str_id]; | |
198 | if (resp->str_type.result == SST_LIB_ERR_LIB_DNLD_REQUIRED) { | |
199 | lib_dnld = kzalloc(sizeof(*lib_dnld), GFP_KERNEL); | |
200 | memcpy(lib_dnld, &resp->lib_dnld, sizeof(*lib_dnld)); | |
201 | } else | |
202 | lib_dnld = NULL; | |
203 | if (str_info->ctrl_blk.on == true) { | |
204 | str_info->ctrl_blk.on = false; | |
205 | str_info->ctrl_blk.data = lib_dnld; | |
206 | str_info->ctrl_blk.condition = true; | |
207 | str_info->ctrl_blk.ret_code = resp->str_type.result; | |
208 | pr_debug("SST DEBUG: sst_alloc_stream_response: waking up.\n"); | |
209 | wake_up(&sst_drv_ctx->wait_queue); | |
210 | } | |
211 | return retval; | |
212 | } | |
213 | ||
214 | ||
215 | /** | |
216 | * sst_get_fw_info - Send msg to query for firmware configurations | |
217 | * @info: out param that holds the firmare configurations | |
218 | * | |
219 | * This function is called when the firmware configurations are queiried for | |
220 | */ | |
221 | int sst_get_fw_info(struct snd_sst_fw_info *info) | |
222 | { | |
223 | int retval = 0; | |
224 | struct ipc_post *msg = NULL; | |
225 | ||
226 | pr_debug("SST DBG:sst_get_fw_info called\n"); | |
227 | ||
228 | if (sst_create_short_msg(&msg)) { | |
229 | pr_err("SST ERR: message creation failed\n"); | |
230 | return -ENOMEM; | |
231 | } | |
232 | ||
233 | sst_fill_header(&msg->header, IPC_IA_GET_FW_INFO, 0, 0); | |
234 | sst_drv_ctx->fw_info_blk.condition = false; | |
235 | sst_drv_ctx->fw_info_blk.ret_code = 0; | |
236 | sst_drv_ctx->fw_info_blk.on = true; | |
237 | sst_drv_ctx->fw_info_blk.data = info; | |
238 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
239 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
240 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
241 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
242 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, | |
243 | &sst_drv_ctx->fw_info_blk, SST_BLOCK_TIMEOUT); | |
244 | if (retval) { | |
245 | pr_err("SST ERR: error in fw_info = %d\n", retval); | |
246 | retval = -EIO; | |
247 | } | |
248 | return retval; | |
249 | } | |
250 | ||
251 | ||
252 | /** | |
253 | * sst_pause_stream - Send msg for a pausing stream | |
254 | * @str_id: stream ID | |
255 | * | |
256 | * This function is called by any function which wants to pause | |
257 | * an already running stream. | |
258 | */ | |
259 | int sst_start_stream(int str_id) | |
260 | { | |
261 | int retval = 0; | |
262 | struct ipc_post *msg = NULL; | |
263 | struct stream_info *str_info; | |
264 | ||
265 | pr_debug("sst_start_stream for %d\n", str_id); | |
266 | retval = sst_validate_strid(str_id); | |
267 | if (retval) | |
268 | return retval; | |
269 | str_info = &sst_drv_ctx->streams[str_id]; | |
270 | if (str_info->status != STREAM_INIT) | |
271 | return -EBADRQC; | |
272 | if (sst_create_short_msg(&msg)) | |
273 | return -ENOMEM; | |
274 | ||
275 | sst_fill_header(&msg->header, IPC_IA_START_STREAM, 0, str_id); | |
276 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
277 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
278 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
279 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
280 | return retval; | |
281 | } | |
282 | ||
283 | /* | |
284 | * sst_pause_stream - Send msg for a pausing stream | |
285 | * @str_id: stream ID | |
286 | * | |
287 | * This function is called by any function which wants to pause | |
288 | * an already running stream. | |
289 | */ | |
290 | int sst_pause_stream(int str_id) | |
291 | { | |
292 | int retval = 0; | |
293 | struct ipc_post *msg = NULL; | |
294 | struct stream_info *str_info; | |
295 | ||
296 | pr_debug("SST DBG:sst_pause_stream for %d\n", str_id); | |
297 | retval = sst_validate_strid(str_id); | |
298 | if (retval) | |
299 | return retval; | |
300 | str_info = &sst_drv_ctx->streams[str_id]; | |
301 | if (str_info->status == STREAM_PAUSED) | |
302 | return 0; | |
303 | if (str_info->status == STREAM_RUNNING || | |
304 | str_info->status == STREAM_INIT) { | |
305 | if (str_info->prev == STREAM_UN_INIT) | |
306 | return -EBADRQC; | |
307 | if (str_info->ctrl_blk.on == true) { | |
308 | pr_err("SST ERR: control path is in use\n "); | |
309 | return -EINVAL; | |
310 | } | |
311 | if (sst_create_short_msg(&msg)) | |
312 | return -ENOMEM; | |
313 | ||
314 | sst_fill_header(&msg->header, IPC_IA_PAUSE_STREAM, 0, str_id); | |
315 | str_info->ctrl_blk.condition = false; | |
316 | str_info->ctrl_blk.ret_code = 0; | |
317 | str_info->ctrl_blk.on = true; | |
318 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
319 | list_add_tail(&msg->node, | |
320 | &sst_drv_ctx->ipc_dispatch_list); | |
321 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
322 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
323 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, | |
324 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); | |
325 | if (retval == 0) { | |
326 | str_info->prev = str_info->status; | |
327 | str_info->status = STREAM_PAUSED; | |
328 | } else if (retval == SST_ERR_INVALID_STREAM_ID) { | |
329 | retval = -EINVAL; | |
330 | mutex_lock(&sst_drv_ctx->stream_lock); | |
331 | sst_clean_stream(str_info); | |
332 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
333 | } | |
334 | } else { | |
335 | retval = -EBADRQC; | |
336 | pr_err("SST ERR:BADQRC for stream\n "); | |
337 | } | |
338 | ||
339 | return retval; | |
340 | } | |
341 | ||
342 | /** | |
343 | * sst_resume_stream - Send msg for resuming stream | |
344 | * @str_id: stream ID | |
345 | * | |
346 | * This function is called by any function which wants to resume | |
347 | * an already paused stream. | |
348 | */ | |
349 | int sst_resume_stream(int str_id) | |
350 | { | |
351 | int retval = 0; | |
352 | struct ipc_post *msg = NULL; | |
353 | struct stream_info *str_info; | |
354 | ||
355 | pr_debug("SST DBG:sst_resume_stream for %d\n", str_id); | |
356 | retval = sst_validate_strid(str_id); | |
357 | if (retval) | |
358 | return retval; | |
359 | str_info = &sst_drv_ctx->streams[str_id]; | |
360 | if (str_info->status == STREAM_RUNNING) | |
361 | return 0; | |
362 | if (str_info->status == STREAM_PAUSED) { | |
363 | if (str_info->ctrl_blk.on == true) { | |
364 | pr_err("SST ERR: control path in use\n"); | |
365 | return -EINVAL; | |
366 | } | |
367 | if (sst_create_short_msg(&msg)) { | |
368 | pr_err("SST ERR: mem allocation failed\n"); | |
369 | return -ENOMEM; | |
370 | } | |
371 | sst_fill_header(&msg->header, IPC_IA_RESUME_STREAM, 0, str_id); | |
372 | str_info->ctrl_blk.condition = false; | |
373 | str_info->ctrl_blk.ret_code = 0; | |
374 | str_info->ctrl_blk.on = true; | |
375 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
376 | list_add_tail(&msg->node, | |
377 | &sst_drv_ctx->ipc_dispatch_list); | |
378 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
379 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
380 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, | |
381 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); | |
382 | if (!retval) { | |
383 | if (str_info->prev == STREAM_RUNNING) | |
384 | str_info->status = STREAM_RUNNING; | |
385 | else | |
386 | str_info->status = STREAM_INIT; | |
387 | str_info->prev = STREAM_PAUSED; | |
388 | } else if (retval == -SST_ERR_INVALID_STREAM_ID) { | |
389 | retval = -EINVAL; | |
390 | mutex_lock(&sst_drv_ctx->stream_lock); | |
391 | sst_clean_stream(str_info); | |
392 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
393 | } | |
394 | } else { | |
395 | retval = -EBADRQC; | |
396 | pr_err("SST ERR: BADQRC for stream\n"); | |
397 | } | |
398 | ||
399 | return retval; | |
400 | } | |
401 | ||
402 | ||
403 | /** | |
404 | * sst_drop_stream - Send msg for stopping stream | |
405 | * @str_id: stream ID | |
406 | * | |
407 | * This function is called by any function which wants to stop | |
408 | * a stream. | |
409 | */ | |
410 | int sst_drop_stream(int str_id) | |
411 | { | |
412 | int retval = 0; | |
413 | struct ipc_post *msg = NULL; | |
414 | struct sst_stream_bufs *bufs = NULL, *_bufs; | |
415 | struct stream_info *str_info; | |
416 | ||
417 | pr_debug("SST DBG:sst_drop_stream for %d\n", str_id); | |
418 | retval = sst_validate_strid(str_id); | |
419 | if (retval) | |
420 | return retval; | |
421 | str_info = &sst_drv_ctx->streams[str_id]; | |
422 | ||
423 | if (str_info->status != STREAM_UN_INIT && | |
424 | str_info->status != STREAM_DECODE) { | |
425 | if (str_info->ctrl_blk.on == true) { | |
426 | pr_err("SST ERR: control path in use\n"); | |
427 | return -EINVAL; | |
428 | } | |
429 | if (sst_create_short_msg(&msg)) { | |
430 | pr_err("SST ERR: mem allocation failed\n"); | |
431 | return -ENOMEM; | |
432 | } | |
433 | sst_fill_header(&msg->header, IPC_IA_DROP_STREAM, 0, str_id); | |
434 | str_info->ctrl_blk.condition = false; | |
435 | str_info->ctrl_blk.ret_code = 0; | |
436 | str_info->ctrl_blk.on = true; | |
437 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
438 | list_add_tail(&msg->node, | |
439 | &sst_drv_ctx->ipc_dispatch_list); | |
440 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
441 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
442 | retval = sst_wait_interruptible_timeout(sst_drv_ctx, | |
443 | &str_info->ctrl_blk, SST_BLOCK_TIMEOUT); | |
444 | if (!retval) { | |
445 | pr_debug("SST DBG:drop success\n"); | |
446 | str_info->prev = STREAM_UN_INIT; | |
447 | str_info->status = STREAM_INIT; | |
448 | if (str_info->src != MAD_DRV) { | |
449 | mutex_lock(&str_info->lock); | |
450 | list_for_each_entry_safe(bufs, _bufs, | |
451 | &str_info->bufs, node) { | |
452 | list_del(&bufs->node); | |
453 | kfree(bufs); | |
454 | } | |
455 | mutex_unlock(&str_info->lock); | |
456 | } | |
457 | str_info->cumm_bytes += str_info->curr_bytes; | |
458 | } else if (retval == -SST_ERR_INVALID_STREAM_ID) { | |
459 | retval = -EINVAL; | |
460 | mutex_lock(&sst_drv_ctx->stream_lock); | |
461 | sst_clean_stream(str_info); | |
462 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
463 | } | |
464 | if (str_info->data_blk.on == true) { | |
465 | str_info->data_blk.condition = true; | |
466 | str_info->data_blk.ret_code = retval; | |
467 | wake_up(&sst_drv_ctx->wait_queue); | |
468 | } | |
469 | } else { | |
470 | retval = -EBADRQC; | |
471 | pr_err("SST ERR:BADQRC for stream\n"); | |
472 | } | |
473 | return retval; | |
474 | } | |
475 | ||
476 | /** | |
477 | * sst_drain_stream - Send msg for draining stream | |
478 | * @str_id: stream ID | |
479 | * | |
480 | * This function is called by any function which wants to drain | |
481 | * a stream. | |
482 | */ | |
483 | int sst_drain_stream(int str_id) | |
484 | { | |
485 | int retval = 0; | |
486 | struct ipc_post *msg = NULL; | |
487 | struct stream_info *str_info; | |
488 | ||
489 | pr_debug("SST DBG:sst_drain_stream for %d\n", str_id); | |
490 | retval = sst_validate_strid(str_id); | |
491 | if (retval) | |
492 | return retval; | |
493 | str_info = &sst_drv_ctx->streams[str_id]; | |
494 | ||
495 | if (str_info->status != STREAM_RUNNING && | |
496 | str_info->status != STREAM_INIT && | |
497 | str_info->status != STREAM_PAUSED) { | |
498 | pr_err("SST ERR: BADQRC for stream = %d\n", | |
499 | str_info->status); | |
500 | return -EBADRQC; | |
501 | } | |
502 | ||
503 | if (str_info->status == STREAM_INIT) { | |
504 | if (sst_create_short_msg(&msg)) { | |
505 | pr_err("SST ERR: mem allocation failed\n"); | |
506 | return -ENOMEM; | |
507 | } | |
508 | sst_fill_header(&msg->header, IPC_IA_DRAIN_STREAM, 0, str_id); | |
509 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
510 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
511 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
512 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
513 | } else | |
514 | str_info->need_draining = true; | |
515 | str_info->data_blk.condition = false; | |
516 | str_info->data_blk.ret_code = 0; | |
517 | str_info->data_blk.on = true; | |
518 | retval = sst_wait_interruptible(sst_drv_ctx, &str_info->data_blk); | |
519 | str_info->need_draining = false; | |
520 | if (retval == -SST_ERR_INVALID_STREAM_ID) { | |
521 | retval = -EINVAL; | |
522 | sst_clean_stream(str_info); | |
523 | } | |
524 | return retval; | |
525 | } | |
526 | ||
527 | /** | |
528 | * sst_free_stream - Frees a stream | |
529 | * @str_id: stream ID | |
530 | * | |
531 | * This function is called by any function which wants to free | |
532 | * a stream. | |
533 | */ | |
534 | int sst_free_stream(int str_id) | |
535 | { | |
536 | int retval = 0; | |
537 | struct ipc_post *msg = NULL; | |
538 | struct stream_info *str_info; | |
539 | ||
540 | pr_debug("SST DBG:sst_free_stream for %d\n", str_id); | |
541 | ||
542 | retval = sst_validate_strid(str_id); | |
543 | if (retval) | |
544 | return retval; | |
545 | str_info = &sst_drv_ctx->streams[str_id]; | |
546 | ||
547 | if (str_info->status != STREAM_UN_INIT) { | |
548 | if (sst_create_short_msg(&msg)) { | |
549 | pr_err("SST ERR: mem allocation failed\n"); | |
550 | return -ENOMEM; | |
551 | } | |
552 | sst_fill_header(&msg->header, IPC_IA_FREE_STREAM, 0, str_id); | |
553 | spin_lock(&sst_drv_ctx->list_spin_lock); | |
554 | list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list); | |
555 | spin_unlock(&sst_drv_ctx->list_spin_lock); | |
556 | sst_post_message(&sst_drv_ctx->ipc_post_msg_wq); | |
557 | str_info->prev = str_info->status; | |
558 | str_info->status = STREAM_UN_INIT; | |
559 | if (str_info->data_blk.on == true) { | |
560 | str_info->data_blk.condition = true; | |
561 | str_info->data_blk.ret_code = 0; | |
562 | wake_up(&sst_drv_ctx->wait_queue); | |
563 | } | |
564 | mutex_lock(&sst_drv_ctx->stream_lock); | |
565 | sst_clean_stream(str_info); | |
566 | mutex_unlock(&sst_drv_ctx->stream_lock); | |
567 | pr_debug("SST DBG:Stream freed\n"); | |
568 | } else { | |
569 | retval = -EBADRQC; | |
570 | pr_debug("SST DBG:BADQRC for stream\n"); | |
571 | } | |
572 | ||
573 | return retval; | |
574 | } | |
575 | ||
576 |