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vmwgfx: Fix assignment in vmw_framebuffer_create_handle
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / staging / intel_sst / intel_sst_stream_encoded.c
blob2be58c5cba028b07d65f90004820dee17c3f632d
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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
31 #include <linux/pci.h>
32 #include <linux/syscalls.h>
33 #include <linux/firmware.h>
34 #include <linux/sched.h>
35 #ifdef CONFIG_MRST_RAR_HANDLER
36 #include <linux/rar_register.h>
37 #include "../memrar/memrar.h"
38 #endif
39 #include "intel_sst_ioctl.h"
40 #include "intel_sst.h"
41 #include "intel_sst_fw_ipc.h"
42 #include "intel_sst_common.h"
43 /**
44 * sst_get_stream_params - Send msg to query for stream parameters
45 * @str_id: stream id for which the parameters are queried for
46 * @get_params: out parameters to which the parameters are copied to
47 *
48 * This function is called when the stream parameters are queiried for
49 */
50 int sst_get_stream_params(int str_id,
51 struct snd_sst_get_stream_params *get_params)
52 {
53 int retval = 0;
54 struct ipc_post *msg = NULL;
55 struct stream_info *str_info;
56 struct snd_sst_fw_get_stream_params *fw_params;
57
58 pr_debug("get_stream for %d\n", str_id);
59 retval = sst_validate_strid(str_id);
60 if (retval)
61 return retval;
62
63 str_info = &sst_drv_ctx->streams[str_id];
64 if (str_info->status != STREAM_UN_INIT) {
65 if (str_info->ctrl_blk.on == true) {
66 pr_err("control path in use\n");
67 return -EINVAL;
68 }
69 if (sst_create_short_msg(&msg)) {
70 pr_err("message creation failed\n");
71 return -ENOMEM;
72 }
73 fw_params = kzalloc(sizeof(*fw_params), GFP_ATOMIC);
74 if (!fw_params) {
75 pr_err("mem allocation failed\n");
76 kfree(msg);
77 return -ENOMEM;
78 }
79
80 sst_fill_header(&msg->header, IPC_IA_GET_STREAM_PARAMS,
81 0, str_id);
82 str_info->ctrl_blk.condition = false;
83 str_info->ctrl_blk.ret_code = 0;
84 str_info->ctrl_blk.on = true;
85 str_info->ctrl_blk.data = (void *) fw_params;
86 spin_lock(&sst_drv_ctx->list_spin_lock);
87 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
88 spin_unlock(&sst_drv_ctx->list_spin_lock);
89 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
90 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
91 &str_info->ctrl_blk, SST_BLOCK_TIMEOUT);
92 if (retval) {
93 get_params->codec_params.result = retval;
94 kfree(fw_params);
95 return -EIO;
96 }
97 memcpy(&get_params->pcm_params, &fw_params->pcm_params,
98 sizeof(fw_params->pcm_params));
99 memcpy(&get_params->codec_params.sparams,
100 &fw_params->codec_params,
101 sizeof(fw_params->codec_params));
102 get_params->codec_params.result = 0;
103 get_params->codec_params.stream_id = str_id;
104 get_params->codec_params.codec = str_info->codec;
105 get_params->codec_params.ops = str_info->ops;
106 get_params->codec_params.stream_type = str_info->str_type;
107 kfree(fw_params);
108 } else {
109 pr_debug("Stream is not in the init state\n");
110 }
111 return retval;
112 }
113
114 /**
115 * sst_set_stream_param - Send msg for setting stream parameters
116 *
117 * @str_id: stream id
118 * @str_param: stream params
119 *
120 * This function sets stream params during runtime
121 */
122 int sst_set_stream_param(int str_id, struct snd_sst_params *str_param)
123 {
124 int retval = 0;
125 struct ipc_post *msg = NULL;
126 struct stream_info *str_info;
127
128 BUG_ON(!str_param);
129 if (sst_drv_ctx->streams[str_id].ops != str_param->ops) {
130 pr_err("Invalid operation\n");
131 return -EINVAL;
132 }
133 retval = sst_validate_strid(str_id);
134 if (retval)
135 return retval;
136 pr_debug("set_stream for %d\n", str_id);
137 str_info = &sst_drv_ctx->streams[str_id];
138 if (sst_drv_ctx->streams[str_id].status == STREAM_INIT) {
139 if (str_info->ctrl_blk.on == true) {
140 pr_err("control path in use\n");
141 return -EAGAIN;
142 }
143 if (sst_create_large_msg(&msg))
144 return -ENOMEM;
145
146 sst_fill_header(&msg->header,
147 IPC_IA_SET_STREAM_PARAMS, 1, str_id);
148 str_info->ctrl_blk.condition = false;
149 str_info->ctrl_blk.ret_code = 0;
150 str_info->ctrl_blk.on = true;
151 msg->header.part.data = sizeof(u32) +
152 sizeof(str_param->sparams);
153 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
154 memcpy(msg->mailbox_data + sizeof(u32), &str_param->sparams,
155 sizeof(str_param->sparams));
156 spin_lock(&sst_drv_ctx->list_spin_lock);
157 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
158 spin_unlock(&sst_drv_ctx->list_spin_lock);
159 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
160 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
161 &str_info->ctrl_blk, SST_BLOCK_TIMEOUT);
162 if (retval < 0) {
163 retval = -EIO;
164 sst_clean_stream(str_info);
165 }
166 } else {
167 retval = -EBADRQC;
168 pr_err("BADQRC for stream\n");
169 }
170 return retval;
171 }
172
173 /**
174 * sst_get_vol - This function allows to get the premix gain or gain of a stream
175 *
176 * @get_vol: this is an output param through which the volume
177 * structure is passed back to user
178 *
179 * This function is called when the premix gain or stream gain is queried for
180 */
181 int sst_get_vol(struct snd_sst_vol *get_vol)
182 {
183 int retval = 0;
184 struct ipc_post *msg = NULL;
185 struct snd_sst_vol *fw_get_vol;
186 int str_id = get_vol->stream_id;
187
188 pr_debug("get vol called\n");
189
190 if (sst_create_short_msg(&msg))
191 return -ENOMEM;
192
193 sst_fill_header(&msg->header,
194 IPC_IA_GET_STREAM_VOL, 0, str_id);
195 sst_drv_ctx->vol_info_blk.condition = false;
196 sst_drv_ctx->vol_info_blk.ret_code = 0;
197 sst_drv_ctx->vol_info_blk.on = true;
198 fw_get_vol = kzalloc(sizeof(*fw_get_vol), GFP_ATOMIC);
199 if (!fw_get_vol) {
200 pr_err("mem allocation failed\n");
201 kfree(msg);
202 return -ENOMEM;
203 }
204 sst_drv_ctx->vol_info_blk.data = (void *)fw_get_vol;
205 spin_lock(&sst_drv_ctx->list_spin_lock);
206 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
207 spin_unlock(&sst_drv_ctx->list_spin_lock);
208 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
209 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
210 &sst_drv_ctx->vol_info_blk, SST_BLOCK_TIMEOUT);
211 if (retval)
212 retval = -EIO;
213 else {
214 pr_debug("stream id %d\n", fw_get_vol->stream_id);
215 pr_debug("volume %d\n", fw_get_vol->volume);
216 pr_debug("ramp duration %d\n", fw_get_vol->ramp_duration);
217 pr_debug("ramp_type %d\n", fw_get_vol->ramp_type);
218 memcpy(get_vol, fw_get_vol, sizeof(*fw_get_vol));
219 }
220 return retval;
221 }
222
223 /**
224 * sst_set_vol - This function allows to set the premix gain or gain of a stream
225 *
226 * @set_vol: this holds the volume structure that needs to be set
227 *
228 * This function is called when premix gain or stream gain is requested to be set
229 */
230 int sst_set_vol(struct snd_sst_vol *set_vol)
231 {
232
233 int retval = 0;
234 struct ipc_post *msg = NULL;
235
236 pr_debug("set vol called\n");
237
238 if (sst_create_large_msg(&msg)) {
239 pr_err("message creation failed\n");
240 return -ENOMEM;
241 }
242 sst_fill_header(&msg->header, IPC_IA_SET_STREAM_VOL, 1,
243 set_vol->stream_id);
244
245 msg->header.part.data = sizeof(u32) + sizeof(*set_vol);
246 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
247 memcpy(msg->mailbox_data + sizeof(u32), set_vol, sizeof(*set_vol));
248 sst_drv_ctx->vol_info_blk.condition = false;
249 sst_drv_ctx->vol_info_blk.ret_code = 0;
250 sst_drv_ctx->vol_info_blk.on = true;
251 sst_drv_ctx->vol_info_blk.data = set_vol;
252 spin_lock(&sst_drv_ctx->list_spin_lock);
253 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
254 spin_unlock(&sst_drv_ctx->list_spin_lock);
255 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
256 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
257 &sst_drv_ctx->vol_info_blk, SST_BLOCK_TIMEOUT);
258 if (retval) {
259 pr_err("error in set_vol = %d\n", retval);
260 retval = -EIO;
261 }
262 return retval;
263 }
264
265 /**
266 * sst_set_mute - This function sets premix mute or soft mute of a stream
267 *
268 * @set_mute: this holds the mute structure that needs to be set
269 *
270 * This function is called when premix mute or stream mute requested to be set
271 */
272 int sst_set_mute(struct snd_sst_mute *set_mute)
273 {
274
275 int retval = 0;
276 struct ipc_post *msg = NULL;
277
278 pr_debug("set mute called\n");
279
280 if (sst_create_large_msg(&msg)) {
281 pr_err("message creation failed\n");
282 return -ENOMEM;
283 }
284 sst_fill_header(&msg->header, IPC_IA_SET_STREAM_MUTE, 1,
285 set_mute->stream_id);
286 sst_drv_ctx->mute_info_blk.condition = false;
287 sst_drv_ctx->mute_info_blk.ret_code = 0;
288 sst_drv_ctx->mute_info_blk.on = true;
289 sst_drv_ctx->mute_info_blk.data = set_mute;
290
291 msg->header.part.data = sizeof(u32) + sizeof(*set_mute);
292 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
293 memcpy(msg->mailbox_data + sizeof(u32), set_mute,
294 sizeof(*set_mute));
295 spin_lock(&sst_drv_ctx->list_spin_lock);
296 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
297 spin_unlock(&sst_drv_ctx->list_spin_lock);
298 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
299 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
300 &sst_drv_ctx->mute_info_blk, SST_BLOCK_TIMEOUT);
301 if (retval) {
302 pr_err("error in set_mute = %d\n", retval);
303 retval = -EIO;
304 }
305 return retval;
306 }
307
308 int sst_prepare_target(struct snd_sst_slot_info *slot)
309 {
310 if (slot->target_device == SND_SST_TARGET_PMIC
311 && slot->device_instance == 1) {
312 /*music mode*/
313 if (sst_drv_ctx->pmic_port_instance == 0)
314 sst_drv_ctx->scard_ops->set_voice_port(
315 DEACTIVATE);
316 } else if ((slot->target_device == SND_SST_TARGET_PMIC ||
317 slot->target_device == SND_SST_TARGET_MODEM) &&
318 slot->device_instance == 0) {
319 /*voip mode where pcm0 is active*/
320 if (sst_drv_ctx->pmic_port_instance == 1)
321 sst_drv_ctx->scard_ops->set_audio_port(
322 DEACTIVATE);
323 }
324 return 0;
325 }
326
327 int sst_activate_target(struct snd_sst_slot_info *slot)
328 {
329 if (slot->target_device == SND_SST_TARGET_PMIC &&
330 slot->device_instance == 1) {
331 /*music mode*/
332 sst_drv_ctx->pmic_port_instance = 1;
333 sst_drv_ctx->scard_ops->set_audio_port(ACTIVATE);
334 sst_drv_ctx->scard_ops->set_pcm_audio_params(
335 slot->pcm_params.sfreq,
336 slot->pcm_params.pcm_wd_sz,
337 slot->pcm_params.num_chan);
338 if (sst_drv_ctx->pb_streams)
339 sst_drv_ctx->scard_ops->power_up_pmic_pb(1);
340 if (sst_drv_ctx->cp_streams)
341 sst_drv_ctx->scard_ops->power_up_pmic_cp(1);
342 } else if ((slot->target_device == SND_SST_TARGET_PMIC ||
343 slot->target_device == SND_SST_TARGET_MODEM) &&
344 slot->device_instance == 0) {
345 /*voip mode where pcm0 is active*/
346 sst_drv_ctx->pmic_port_instance = 0;
347 sst_drv_ctx->scard_ops->set_voice_port(
348 ACTIVATE);
349 sst_drv_ctx->scard_ops->power_up_pmic_pb(0);
350 /*sst_drv_ctx->scard_ops->power_up_pmic_cp(0);*/
351 }
352 return 0;
353 }
354
355 int sst_parse_target(struct snd_sst_slot_info *slot)
356 {
357 int retval = 0;
358
359 if (slot->action == SND_SST_PORT_ACTIVATE &&
360 slot->device_type == SND_SST_DEVICE_PCM) {
361 retval = sst_activate_target(slot);
362 if (retval)
363 pr_err("SST_Activate_target_fail\n");
364 else
365 pr_err("SST_Activate_target_pass\n");
366 } else if (slot->action == SND_SST_PORT_PREPARE &&
367 slot->device_type == SND_SST_DEVICE_PCM) {
368 retval = sst_prepare_target(slot);
369 if (retval)
370 pr_err("SST_prepare_target_fail\n");
371 else
372 pr_err("SST_prepare_target_pass\n");
373 } else {
374 pr_err("slot_action : %d, device_type: %d\n",
375 slot->action, slot->device_type);
376 }
377 return retval;
378 }
379
380 int sst_send_target(struct snd_sst_target_device *target)
381 {
382 int retval;
383 struct ipc_post *msg;
384
385 if (sst_create_large_msg(&msg)) {
386 pr_err("message creation failed\n");
387 return -ENOMEM;
388 }
389 sst_fill_header(&msg->header, IPC_IA_TARGET_DEV_SELECT, 1, 0);
390 sst_drv_ctx->tgt_dev_blk.condition = false;
391 sst_drv_ctx->tgt_dev_blk.ret_code = 0;
392 sst_drv_ctx->tgt_dev_blk.on = true;
393
394 msg->header.part.data = sizeof(u32) + sizeof(*target);
395 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
396 memcpy(msg->mailbox_data + sizeof(u32), target,
397 sizeof(*target));
398 spin_lock(&sst_drv_ctx->list_spin_lock);
399 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
400 spin_unlock(&sst_drv_ctx->list_spin_lock);
401 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
402 pr_debug("message sent- waiting\n");
403 retval = sst_wait_interruptible_timeout(sst_drv_ctx,
404 &sst_drv_ctx->tgt_dev_blk, TARGET_DEV_BLOCK_TIMEOUT);
405 if (retval)
406 pr_err("target device ipc failed = 0x%x\n", retval);
407 return retval;
408
409 }
410
411 int sst_target_device_validate(struct snd_sst_target_device *target)
412 {
413 int retval = 0;
414 int i;
415
416 for (i = 0; i < SST_MAX_TARGET_DEVICES; i++) {
417 if (target->devices[i].device_type == SND_SST_DEVICE_PCM) {
418 /*pcm device, check params*/
419 if (target->devices[i].device_instance == 1) {
420 if ((target->devices[i].device_mode !=
421 SND_SST_DEV_MODE_PCM_MODE4_I2S) &&
422 (target->devices[i].device_mode !=
423 SND_SST_DEV_MODE_PCM_MODE4_RIGHT_JUSTIFIED)
424 && (target->devices[i].device_mode !=
425 SND_SST_DEV_MODE_PCM_MODE1))
426 goto err;
427 } else if (target->devices[i].device_instance == 0) {
428 if ((target->devices[i].device_mode !=
429 SND_SST_DEV_MODE_PCM_MODE2)
430 && (target->devices[i].device_mode !=
431 SND_SST_DEV_MODE_PCM_MODE4_I2S)
432 && (target->devices[i].device_mode !=
433 SND_SST_DEV_MODE_PCM_MODE1))
434 goto err;
435 if (target->devices[i].pcm_params.sfreq != 8000
436 || target->devices[i].pcm_params.num_chan != 1
437 || target->devices[i].pcm_params.pcm_wd_sz !=
438 16)
439 goto err;
440 } else {
441 err:
442 pr_err("i/p params incorrect\n");
443 return -EINVAL;
444 }
445 }
446 }
447 return retval;
448 }
449
450 /**
451 * sst_target_device_select - This function sets the target device configurations
452 *
453 * @target: this parameter holds the configurations to be set
454 *
455 * This function is called when the user layer wants to change the target
456 * device's configurations
457 */
458
459 int sst_target_device_select(struct snd_sst_target_device *target)
460 {
461 int retval, i, prepare_count = 0;
462
463 pr_debug("Target Device Select\n");
464
465 if (target->device_route < 0 || target->device_route > 2) {
466 pr_err("device route is invalid\n");
467 return -EINVAL;
468 }
469
470 if (target->device_route != 0) {
471 pr_err("Unsupported config\n");
472 return -EIO;
473 }
474 retval = sst_target_device_validate(target);
475 if (retval)
476 return retval;
477
478 retval = sst_send_target(target);
479 if (retval)
480 return retval;
481 for (i = 0; i < SST_MAX_TARGET_DEVICES; i++) {
482 if (target->devices[i].action == SND_SST_PORT_ACTIVATE) {
483 pr_debug("activate called in %d\n", i);
484 retval = sst_parse_target(&target->devices[i]);
485 if (retval)
486 return retval;
487 } else if (target->devices[i].action == SND_SST_PORT_PREPARE) {
488 pr_debug("PREPARE in %d, Forwarding\n", i);
489 retval = sst_parse_target(&target->devices[i]);
490 if (retval) {
491 pr_err("Parse Target fail %d\n", retval);
492 return retval;
493 }
494 pr_debug("Parse Target successful %d\n", retval);
495 if (target->devices[i].device_type ==
496 SND_SST_DEVICE_PCM)
497 prepare_count++;
498 }
499 }
500 if (target->devices[0].action == SND_SST_PORT_PREPARE &&
501 prepare_count == 0)
502 sst_drv_ctx->scard_ops->power_down_pmic();
503
504 return retval;
505 }
506 #ifdef CONFIG_MRST_RAR_HANDLER
507 /*This function gets the physical address of the secure memory from the handle*/
508 static inline int sst_get_RAR(struct RAR_buffer *buffers, int count)
509 {
510 int retval = 0, rar_status = 0;
511
512 rar_status = rar_handle_to_bus(buffers, count);
513
514 if (count != rar_status) {
515 pr_err("The rar CALL Failed");
516 retval = -EIO;
517 }
518 if (buffers->info.type != RAR_TYPE_AUDIO) {
519 pr_err("Invalid RAR type\n");
520 return -EINVAL;
521 }
522 return retval;
523 }
524
525 #endif
526
527 /* This function creates the scatter gather list to be sent to firmware to
528 capture/playback data*/
529 static int sst_create_sg_list(struct stream_info *stream,
530 struct sst_frame_info *sg_list)
531 {
532 struct sst_stream_bufs *kbufs = NULL;
533 #ifdef CONFIG_MRST_RAR_HANDLER
534 struct RAR_buffer rar_buffers;
535 int retval = 0;
536 #endif
537 int i = 0;
538 list_for_each_entry(kbufs, &stream->bufs, node) {
539 if (kbufs->in_use == false) {
540 #ifdef CONFIG_MRST_RAR_HANDLER
541 if (stream->ops == STREAM_OPS_PLAYBACK_DRM) {
542 pr_debug("DRM playback handling\n");
543 rar_buffers.info.handle = (__u32)kbufs->addr;
544 rar_buffers.info.size = kbufs->size;
545 pr_debug("rar handle 0x%x size=0x%x\n",
546 rar_buffers.info.handle,
547 rar_buffers.info.size);
548 retval = sst_get_RAR(&rar_buffers, 1);
549
550 if (retval)
551 return retval;
552 sg_list->addr[i].addr = rar_buffers.bus_address;
553 /* rar_buffers.info.size; */
554 sg_list->addr[i].size = (__u32)kbufs->size;
555 pr_debug("phyaddr[%d] 0x%x Size:0x%x\n"
556 , i, sg_list->addr[i].addr,
557 sg_list->addr[i].size);
558 }
559 #endif
560 if (stream->ops != STREAM_OPS_PLAYBACK_DRM) {
561 sg_list->addr[i].addr =
562 virt_to_phys((void *)
563 kbufs->addr + kbufs->offset);
564 sg_list->addr[i].size = kbufs->size;
565 pr_debug("phyaddr[%d]:0x%x Size:0x%x\n"
566 , i , sg_list->addr[i].addr, kbufs->size);
567 }
568 stream->curr_bytes += sg_list->addr[i].size;
569 kbufs->in_use = true;
570 i++;
571 }
572 if (i >= MAX_NUM_SCATTER_BUFFERS)
573 break;
574 }
575
576 sg_list->num_entries = i;
577 pr_debug("sg list entries = %d\n", sg_list->num_entries);
578 return i;
579 }
580
581
582 /**
583 * sst_play_frame - Send msg for sending stream frames
584 *
585 * @str_id: ID of stream
586 *
587 * This function is called to send data to be played out
588 * to the firmware
589 */
590 int sst_play_frame(int str_id)
591 {
592 int i = 0, retval = 0;
593 struct ipc_post *msg = NULL;
594 struct sst_frame_info sg_list = {0};
595 struct sst_stream_bufs *kbufs = NULL, *_kbufs;
596 struct stream_info *stream;
597
598 pr_debug("play frame for %d\n", str_id);
599 retval = sst_validate_strid(str_id);
600 if (retval)
601 return retval;
602
603 stream = &sst_drv_ctx->streams[str_id];
604 /* clear prev sent buffers */
605 list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
606 if (kbufs->in_use == true) {
607 spin_lock(&stream->pcm_lock);
608 list_del(&kbufs->node);
609 spin_unlock(&stream->pcm_lock);
610 kfree(kbufs);
611 }
612 }
613 /* update bytes sent */
614 stream->cumm_bytes += stream->curr_bytes;
615 stream->curr_bytes = 0;
616 if (list_empty(&stream->bufs)) {
617 /* no user buffer available */
618 pr_debug("Null buffer stream status %d\n", stream->status);
619 stream->prev = stream->status;
620 stream->status = STREAM_INIT;
621 pr_debug("new stream status = %d\n", stream->status);
622 if (stream->need_draining == true) {
623 pr_debug("draining stream\n");
624 if (sst_create_short_msg(&msg)) {
625 pr_err("mem allocation failed\n");
626 return -ENOMEM;
627 }
628 sst_fill_header(&msg->header, IPC_IA_DRAIN_STREAM,
629 0, str_id);
630 spin_lock(&sst_drv_ctx->list_spin_lock);
631 list_add_tail(&msg->node,
632 &sst_drv_ctx->ipc_dispatch_list);
633 spin_unlock(&sst_drv_ctx->list_spin_lock);
634 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
635 } else if (stream->data_blk.on == true) {
636 pr_debug("user list empty.. wake\n");
637 /* unblock */
638 stream->data_blk.ret_code = 0;
639 stream->data_blk.condition = true;
640 stream->data_blk.on = false;
641 wake_up(&sst_drv_ctx->wait_queue);
642 }
643 return 0;
644 }
645
646 /* create list */
647 i = sst_create_sg_list(stream, &sg_list);
648
649 /* post msg */
650 if (sst_create_large_msg(&msg))
651 return -ENOMEM;
652
653 sst_fill_header(&msg->header, IPC_IA_PLAY_FRAMES, 1, str_id);
654 msg->header.part.data = sizeof(u32) + sizeof(sg_list);
655 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
656 memcpy(msg->mailbox_data + sizeof(u32), &sg_list, sizeof(sg_list));
657 spin_lock(&sst_drv_ctx->list_spin_lock);
658 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
659 spin_unlock(&sst_drv_ctx->list_spin_lock);
660 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
661 return 0;
662
663 }
664
665 /**
666 * sst_capture_frame - Send msg for sending stream frames
667 *
668 * @str_id: ID of stream
669 *
670 * This function is called to capture data from the firmware
671 */
672 int sst_capture_frame(int str_id)
673 {
674 int i = 0, retval = 0;
675 struct ipc_post *msg = NULL;
676 struct sst_frame_info sg_list = {0};
677 struct sst_stream_bufs *kbufs = NULL, *_kbufs;
678 struct stream_info *stream;
679
680
681 pr_debug("capture frame for %d\n", str_id);
682 retval = sst_validate_strid(str_id);
683 if (retval)
684 return retval;
685 stream = &sst_drv_ctx->streams[str_id];
686 /* clear prev sent buffers */
687 list_for_each_entry_safe(kbufs, _kbufs, &stream->bufs, node) {
688 if (kbufs->in_use == true) {
689 list_del(&kbufs->node);
690 kfree(kbufs);
691 pr_debug("del node\n");
692 }
693 }
694 if (list_empty(&stream->bufs)) {
695 /* no user buffer available */
696 pr_debug("Null buffer!!!!stream status %d\n",
697 stream->status);
698 stream->prev = stream->status;
699 stream->status = STREAM_INIT;
700 pr_debug("new stream status = %d\n",
701 stream->status);
702 if (stream->data_blk.on == true) {
703 pr_debug("user list empty.. wake\n");
704 /* unblock */
705 stream->data_blk.ret_code = 0;
706 stream->data_blk.condition = true;
707 stream->data_blk.on = false;
708 wake_up(&sst_drv_ctx->wait_queue);
709
710 }
711 return 0;
712 }
713 /* create new sg list */
714 i = sst_create_sg_list(stream, &sg_list);
715
716 /* post msg */
717 if (sst_create_large_msg(&msg))
718 return -ENOMEM;
719
720 sst_fill_header(&msg->header, IPC_IA_CAPT_FRAMES, 1, str_id);
721 msg->header.part.data = sizeof(u32) + sizeof(sg_list);
722 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
723 memcpy(msg->mailbox_data + sizeof(u32), &sg_list, sizeof(sg_list));
724 spin_lock(&sst_drv_ctx->list_spin_lock);
725 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
726 spin_unlock(&sst_drv_ctx->list_spin_lock);
727 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
728
729
730 /*update bytes recevied*/
731 stream->cumm_bytes += stream->curr_bytes;
732 stream->curr_bytes = 0;
733
734 pr_debug("Cum bytes = %d\n", stream->cumm_bytes);
735 return 0;
736 }
737
738 /*This function is used to calculate the minimum size of input buffers given*/
739 static unsigned int calculate_min_size(struct snd_sst_buffs *bufs)
740 {
741 int i, min_val = bufs->buff_entry[0].size;
742 for (i = 1 ; i < bufs->entries; i++) {
743 if (bufs->buff_entry[i].size < min_val)
744 min_val = bufs->buff_entry[i].size;
745 }
746 pr_debug("min_val = %d\n", min_val);
747 return min_val;
748 }
749
750 static unsigned int calculate_max_size(struct snd_sst_buffs *bufs)
751 {
752 int i, max_val = bufs->buff_entry[0].size;
753 for (i = 1 ; i < bufs->entries; i++) {
754 if (bufs->buff_entry[i].size > max_val)
755 max_val = bufs->buff_entry[i].size;
756 }
757 pr_debug("max_val = %d\n", max_val);
758 return max_val;
759 }
760
761 /*This function is used to allocate input and output buffers to be sent to
762 the firmware that will take encoded data and return decoded data*/
763 static int sst_allocate_decode_buf(struct stream_info *str_info,
764 struct snd_sst_dbufs *dbufs,
765 unsigned int cum_input_given,
766 unsigned int cum_output_given)
767 {
768 #ifdef CONFIG_MRST_RAR_HANDLER
769 if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
770
771 if (dbufs->ibufs->type == SST_BUF_RAR &&
772 dbufs->obufs->type == SST_BUF_RAR) {
773 if (dbufs->ibufs->entries == dbufs->obufs->entries)
774 return 0;
775 else {
776 pr_err("RAR entries dont match\n");
777 return -EINVAL;
778 }
779 } else
780 str_info->decode_osize = cum_output_given;
781 return 0;
782
783 }
784 #endif
785 if (!str_info->decode_ibuf) {
786 pr_debug("no i/p buffers, trying full size\n");
787 str_info->decode_isize = cum_input_given;
788 str_info->decode_ibuf = kzalloc(str_info->decode_isize,
789 GFP_KERNEL);
790 str_info->idecode_alloc = str_info->decode_isize;
791 }
792 if (!str_info->decode_ibuf) {
793 pr_debug("buff alloc failed, try max size\n");
794 str_info->decode_isize = calculate_max_size(dbufs->ibufs);
795 str_info->decode_ibuf = kzalloc(
796 str_info->decode_isize, GFP_KERNEL);
797 str_info->idecode_alloc = str_info->decode_isize;
798 }
799 if (!str_info->decode_ibuf) {
800 pr_debug("buff alloc failed, try min size\n");
801 str_info->decode_isize = calculate_min_size(dbufs->ibufs);
802 str_info->decode_ibuf = kzalloc(str_info->decode_isize,
803 GFP_KERNEL);
804 if (!str_info->decode_ibuf) {
805 pr_err("mem allocation failed\n");
806 return -ENOMEM;
807 }
808 str_info->idecode_alloc = str_info->decode_isize;
809 }
810 str_info->decode_osize = cum_output_given;
811 if (str_info->decode_osize > sst_drv_ctx->mmap_len)
812 str_info->decode_osize = sst_drv_ctx->mmap_len;
813 return 0;
814 }
815
816 /*This function is used to send the message to firmware to decode the data*/
817 static int sst_send_decode_mess(int str_id, struct stream_info *str_info,
818 struct snd_sst_decode_info *dec_info)
819 {
820 struct ipc_post *msg = NULL;
821 int retval = 0;
822
823 pr_debug("SST DBG:sst_set_mute:called\n");
824
825 if (str_info->decode_ibuf_type == SST_BUF_RAR) {
826 #ifdef CONFIG_MRST_RAR_HANDLER
827 dec_info->frames_in.addr[0].addr =
828 (unsigned long)str_info->decode_ibuf;
829 dec_info->frames_in.addr[0].size =
830 str_info->decode_isize;
831 #endif
832
833 } else {
834 dec_info->frames_in.addr[0].addr = virt_to_phys((void *)
835 str_info->decode_ibuf);
836 dec_info->frames_in.addr[0].size = str_info->decode_isize;
837 }
838
839
840 if (str_info->decode_obuf_type == SST_BUF_RAR) {
841 #ifdef CONFIG_MRST_RAR_HANDLER
842 dec_info->frames_out.addr[0].addr =
843 (unsigned long)str_info->decode_obuf;
844 dec_info->frames_out.addr[0].size = str_info->decode_osize;
845 #endif
846
847 } else {
848 dec_info->frames_out.addr[0].addr = virt_to_phys((void *)
849 str_info->decode_obuf) ;
850 dec_info->frames_out.addr[0].size = str_info->decode_osize;
851 }
852
853 dec_info->frames_in.num_entries = 1;
854 dec_info->frames_out.num_entries = 1;
855 dec_info->frames_in.rsrvd = 0;
856 dec_info->frames_out.rsrvd = 0;
857 dec_info->input_bytes_consumed = 0;
858 dec_info->output_bytes_produced = 0;
859 if (sst_create_large_msg(&msg)) {
860 pr_err("message creation failed\n");
861 return -ENOMEM;
862 }
863
864 sst_fill_header(&msg->header, IPC_IA_DECODE_FRAMES, 1, str_id);
865 msg->header.part.data = sizeof(u32) + sizeof(*dec_info);
866 memcpy(msg->mailbox_data, &msg->header, sizeof(u32));
867 memcpy(msg->mailbox_data + sizeof(u32), dec_info,
868 sizeof(*dec_info));
869 spin_lock(&sst_drv_ctx->list_spin_lock);
870 list_add_tail(&msg->node, &sst_drv_ctx->ipc_dispatch_list);
871 spin_unlock(&sst_drv_ctx->list_spin_lock);
872 str_info->data_blk.condition = false;
873 str_info->data_blk.ret_code = 0;
874 str_info->data_blk.on = true;
875 str_info->data_blk.data = dec_info;
876 sst_post_message(&sst_drv_ctx->ipc_post_msg_wq);
877 retval = sst_wait_interruptible(sst_drv_ctx, &str_info->data_blk);
878 return retval;
879 }
880
881 #ifdef CONFIG_MRST_RAR_HANDLER
882 static int sst_prepare_input_buffers_rar(struct stream_info *str_info,
883 struct snd_sst_dbufs *dbufs,
884 int *input_index, int *in_copied,
885 int *input_index_valid_size, int *new_entry_flag)
886 {
887 int retval = 0, i;
888
889 if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
890 struct RAR_buffer rar_buffers;
891 __u32 info;
892 retval = copy_from_user((void *) &info,
893 dbufs->ibufs->buff_entry[i].buffer,
894 sizeof(__u32));
895 if (retval) {
896 pr_err("cpy from user fail\n");
897 return -EAGAIN;
898 }
899 rar_buffers.info.type = dbufs->ibufs->type;
900 rar_buffers.info.size = dbufs->ibufs->buff_entry[i].size;
901 rar_buffers.info.handle = info;
902 pr_debug("rar in DnR(input buffer function)=0x%x size=0x%x",
903 rar_buffers.info.handle,
904 rar_buffers.info.size);
905 retval = sst_get_RAR(&rar_buffers, 1);
906 if (retval) {
907 pr_debug("SST ERR: RAR API failed\n");
908 return retval;
909 }
910 str_info->decode_ibuf =
911 (void *) ((unsigned long) rar_buffers.bus_address);
912 pr_debug("RAR buf addr in DnR (input buffer function)0x%lu",
913 (unsigned long) str_info->decode_ibuf);
914 pr_debug("rar in DnR decode function/output b_add rar =0x%lu",
915 (unsigned long) rar_buffers.bus_address);
916 *input_index = i + 1;
917 str_info->decode_isize = dbufs->ibufs->buff_entry[i].size;
918 str_info->decode_ibuf_type = dbufs->ibufs->type;
919 *in_copied = str_info->decode_isize;
920 }
921 return retval;
922 }
923 #endif
924 /*This function is used to prepare the kernel input buffers with contents
925 before sending for decode*/
926 static int sst_prepare_input_buffers(struct stream_info *str_info,
927 struct snd_sst_dbufs *dbufs,
928 int *input_index, int *in_copied,
929 int *input_index_valid_size, int *new_entry_flag)
930 {
931 int i, cpy_size, retval = 0;
932
933 pr_debug("input_index = %d, input entries = %d\n",
934 *input_index, dbufs->ibufs->entries);
935 for (i = *input_index; i < dbufs->ibufs->entries; i++) {
936 #ifdef CONFIG_MRST_RAR_HANDLER
937 retval = sst_prepare_input_buffers_rar(str_info,
938 dbufs, input_index, in_copied,
939 input_index_valid_size, new_entry_flag);
940 if (retval) {
941 pr_err("In prepare input buffers for RAR\n");
942 return -EIO;
943 }
944 #endif
945 *input_index = i;
946 if (*input_index_valid_size == 0)
947 *input_index_valid_size =
948 dbufs->ibufs->buff_entry[i].size;
949 pr_debug("inout addr = %p, size = %d\n",
950 dbufs->ibufs->buff_entry[i].buffer,
951 *input_index_valid_size);
952 pr_debug("decode_isize = %d, in_copied %d\n",
953 str_info->decode_isize, *in_copied);
954 if (*input_index_valid_size <=
955 (str_info->decode_isize - *in_copied))
956 cpy_size = *input_index_valid_size;
957 else
958 cpy_size = str_info->decode_isize - *in_copied;
959
960 pr_debug("cpy size = %d\n", cpy_size);
961 if (!dbufs->ibufs->buff_entry[i].buffer) {
962 pr_err("i/p buffer is null\n");
963 return -EINVAL;
964 }
965 pr_debug("Try copy To %p, From %p, size %d\n",
966 str_info->decode_ibuf + *in_copied,
967 dbufs->ibufs->buff_entry[i].buffer, cpy_size);
968
969 retval =
970 copy_from_user((void *)(str_info->decode_ibuf + *in_copied),
971 (void *) dbufs->ibufs->buff_entry[i].buffer,
972 cpy_size);
973 if (retval) {
974 pr_err("copy from user failed\n");
975 return -EIO;
976 }
977 *in_copied += cpy_size;
978 *input_index_valid_size -= cpy_size;
979 pr_debug("in buff size = %d, in_copied = %d\n",
980 *input_index_valid_size, *in_copied);
981 if (*input_index_valid_size != 0) {
982 pr_debug("more input buffers left\n");
983 dbufs->ibufs->buff_entry[i].buffer += cpy_size;
984 break;
985 }
986 if (*in_copied == str_info->decode_isize &&
987 *input_index_valid_size == 0 &&
988 (i+1) <= dbufs->ibufs->entries) {
989 pr_debug("all input buffers copied\n");
990 *new_entry_flag = true;
991 *input_index = i + 1;
992 break;
993 }
994 }
995 return retval;
996 }
997
998 /* This function is used to copy the decoded data from kernel buffers to
999 the user output buffers with contents after decode*/
1000 static int sst_prepare_output_buffers(struct stream_info *str_info,
1001 struct snd_sst_dbufs *dbufs,
1002 int *output_index, int output_size,
1003 int *out_copied)
1004
1005 {
1006 int i, cpy_size, retval = 0;
1007 pr_debug("output_index = %d, output entries = %d\n",
1008 *output_index,
1009 dbufs->obufs->entries);
1010 for (i = *output_index; i < dbufs->obufs->entries; i++) {
1011 *output_index = i;
1012 pr_debug("output addr = %p, size = %d\n",
1013 dbufs->obufs->buff_entry[i].buffer,
1014 dbufs->obufs->buff_entry[i].size);
1015 pr_debug("output_size = %d, out_copied = %d\n",
1016 output_size, *out_copied);
1017 if (dbufs->obufs->buff_entry[i].size <
1018 (output_size - *out_copied))
1019 cpy_size = dbufs->obufs->buff_entry[i].size;
1020 else
1021 cpy_size = output_size - *out_copied;
1022 pr_debug("cpy size = %d\n", cpy_size);
1023 pr_debug("Try copy To: %p, From %p, size %d\n",
1024 dbufs->obufs->buff_entry[i].buffer,
1025 sst_drv_ctx->mmap_mem + *out_copied,
1026 cpy_size);
1027 retval = copy_to_user(dbufs->obufs->buff_entry[i].buffer,
1028 sst_drv_ctx->mmap_mem + *out_copied,
1029 cpy_size);
1030 if (retval) {
1031 pr_err("copy to user failed\n");
1032 return -EIO;
1033 } else
1034 pr_debug("copy to user passed\n");
1035 *out_copied += cpy_size;
1036 dbufs->obufs->buff_entry[i].size -= cpy_size;
1037 pr_debug("o/p buff size %d, out_copied %d\n",
1038 dbufs->obufs->buff_entry[i].size, *out_copied);
1039 if (dbufs->obufs->buff_entry[i].size != 0) {
1040 *output_index = i;
1041 dbufs->obufs->buff_entry[i].buffer += cpy_size;
1042 break;
1043 } else if (*out_copied == output_size) {
1044 *output_index = i + 1;
1045 break;
1046 }
1047 }
1048 return retval;
1049 }
1050
1051 /**
1052 * sst_decode - Send msg for decoding frames
1053 *
1054 * @str_id: ID of stream
1055 * @dbufs: param that holds the user input and output buffers and size
1056 *
1057 * This function is called to decode data from the firmware
1058 */
1059 int sst_decode(int str_id, struct snd_sst_dbufs *dbufs)
1060 {
1061 int retval = 0, i;
1062 unsigned long long total_input = 0 , total_output = 0;
1063 unsigned int cum_input_given = 0 , cum_output_given = 0;
1064 int copy_in_done = false, copy_out_done = false;
1065 int input_index = 0, output_index = 0;
1066 int input_index_valid_size = 0;
1067 int in_copied, out_copied;
1068 int new_entry_flag;
1069 u64 output_size;
1070 struct stream_info *str_info;
1071 struct snd_sst_decode_info dec_info;
1072 unsigned long long input_bytes, output_bytes;
1073
1074 sst_drv_ctx->scard_ops->power_down_pmic();
1075 pr_debug("Powering_down_PMIC...\n");
1076
1077 retval = sst_validate_strid(str_id);
1078 if (retval)
1079 return retval;
1080
1081 str_info = &sst_drv_ctx->streams[str_id];
1082 if (str_info->status != STREAM_INIT) {
1083 pr_err("invalid stream state = %d\n",
1084 str_info->status);
1085 return -EINVAL;
1086 }
1087
1088 str_info->prev = str_info->status;
1089 str_info->status = STREAM_DECODE;
1090
1091 for (i = 0; i < dbufs->ibufs->entries; i++)
1092 cum_input_given += dbufs->ibufs->buff_entry[i].size;
1093 for (i = 0; i < dbufs->obufs->entries; i++)
1094 cum_output_given += dbufs->obufs->buff_entry[i].size;
1095
1096 /* input and output buffer allocation */
1097 retval = sst_allocate_decode_buf(str_info, dbufs,
1098 cum_input_given, cum_output_given);
1099 if (retval) {
1100 pr_err("mem allocation failed, abort!!!\n");
1101 retval = -ENOMEM;
1102 goto finish;
1103 }
1104
1105 str_info->decode_isize = str_info->idecode_alloc;
1106 str_info->decode_ibuf_type = dbufs->ibufs->type;
1107 str_info->decode_obuf_type = dbufs->obufs->type;
1108
1109 while ((copy_out_done == false) && (copy_in_done == false)) {
1110 in_copied = 0;
1111 new_entry_flag = false;
1112 retval = sst_prepare_input_buffers(str_info,\
1113 dbufs, &input_index, &in_copied,
1114 &input_index_valid_size, &new_entry_flag);
1115 if (retval) {
1116 pr_err("prepare in buffers failed\n");
1117 goto finish;
1118 }
1119
1120 if (str_info->ops != STREAM_OPS_PLAYBACK_DRM)
1121 str_info->decode_obuf = sst_drv_ctx->mmap_mem;
1122
1123 #ifdef CONFIG_MRST_RAR_HANDLER
1124 else {
1125 if (dbufs->obufs->type == SST_BUF_RAR) {
1126 struct RAR_buffer rar_buffers;
1127 __u32 info;
1128
1129 pr_debug("DRM");
1130 retval = copy_from_user((void *) &info,
1131 dbufs->obufs->
1132 buff_entry[output_index].buffer,
1133 sizeof(__u32));
1134
1135 rar_buffers.info.size = dbufs->obufs->
1136 buff_entry[output_index].size;
1137 rar_buffers.info.handle = info;
1138 retval = sst_get_RAR(&rar_buffers, 1);
1139 if (retval)
1140 return retval;
1141
1142 str_info->decode_obuf = (void *)((unsigned long)
1143 rar_buffers.bus_address);
1144 str_info->decode_osize = dbufs->obufs->
1145 buff_entry[output_index].size;
1146 str_info->decode_obuf_type = dbufs->obufs->type;
1147 pr_debug("DRM handling\n");
1148 pr_debug("o/p_add=0x%lu Size=0x%x\n",
1149 (unsigned long) str_info->decode_obuf,
1150 str_info->decode_osize);
1151 } else {
1152 str_info->decode_obuf = sst_drv_ctx->mmap_mem;
1153 str_info->decode_osize = dbufs->obufs->
1154 buff_entry[output_index].size;
1155
1156 }
1157 }
1158 #endif
1159 if (str_info->ops != STREAM_OPS_PLAYBACK_DRM) {
1160 if (str_info->decode_isize > in_copied) {
1161 str_info->decode_isize = in_copied;
1162 pr_debug("i/p size = %d\n",
1163 str_info->decode_isize);
1164 }
1165 }
1166
1167
1168 retval = sst_send_decode_mess(str_id, str_info, &dec_info);
1169 if (retval || dec_info.input_bytes_consumed == 0) {
1170 pr_err("SST ERR: mess failed or no input consumed\n");
1171 goto finish;
1172 }
1173 input_bytes = dec_info.input_bytes_consumed;
1174 output_bytes = dec_info.output_bytes_produced;
1175
1176 pr_debug("in_copied=%d, con=%lld, prod=%lld\n",
1177 in_copied, input_bytes, output_bytes);
1178 if (dbufs->obufs->type == SST_BUF_RAR) {
1179 output_index += 1;
1180 if (output_index == dbufs->obufs->entries) {
1181 copy_in_done = true;
1182 pr_debug("all i/p cpy done\n");
1183 }
1184 total_output += output_bytes;
1185 } else {
1186 out_copied = 0;
1187 output_size = output_bytes;
1188 retval = sst_prepare_output_buffers(str_info, dbufs,
1189 &output_index, output_size, &out_copied);
1190 if (retval) {
1191 pr_err("prep out buff fail\n");
1192 goto finish;
1193 }
1194 if (str_info->ops != STREAM_OPS_PLAYBACK_DRM) {
1195 if (in_copied != input_bytes) {
1196 int bytes_left = in_copied -
1197 input_bytes;
1198 pr_debug("bytes %d\n",
1199 bytes_left);
1200 if (new_entry_flag == true)
1201 input_index--;
1202 while (bytes_left) {
1203 struct snd_sst_buffs *ibufs;
1204 struct snd_sst_buff_entry
1205 *buff_entry;
1206 unsigned int size_sent;
1207
1208 ibufs = dbufs->ibufs;
1209 buff_entry =
1210 &ibufs->buff_entry[input_index];
1211 size_sent = buff_entry->size -\
1212 input_index_valid_size;
1213 if (bytes_left == size_sent) {
1214 bytes_left = 0;
1215 } else if (bytes_left <
1216 size_sent) {
1217 buff_entry->buffer +=
1218 (size_sent -
1219 bytes_left);
1220 buff_entry->size -=
1221 (size_sent -
1222 bytes_left);
1223 bytes_left = 0;
1224 } else {
1225 bytes_left -= size_sent;
1226 input_index--;
1227 input_index_valid_size =
1228 0;
1229 }
1230 }
1231
1232 }
1233 }
1234
1235 total_output += out_copied;
1236 if (str_info->decode_osize != out_copied) {
1237 str_info->decode_osize -= out_copied;
1238 pr_debug("output size modified = %d\n",
1239 str_info->decode_osize);
1240 }
1241 }
1242 total_input += input_bytes;
1243
1244 if (str_info->ops == STREAM_OPS_PLAYBACK_DRM) {
1245 if (total_input == cum_input_given)
1246 copy_in_done = true;
1247 copy_out_done = true;
1248
1249 } else {
1250 if (total_output == cum_output_given) {
1251 copy_out_done = true;
1252 pr_debug("all o/p cpy done\n");
1253 }
1254
1255 if (total_input == cum_input_given) {
1256 copy_in_done = true;
1257 pr_debug("all i/p cpy done\n");
1258 }
1259 }
1260
1261 pr_debug("copy_out = %d, copy_in = %d\n",
1262 copy_out_done, copy_in_done);
1263 }
1264
1265 finish:
1266 dbufs->input_bytes_consumed = total_input;
1267 dbufs->output_bytes_produced = total_output;
1268 str_info->status = str_info->prev;
1269 str_info->prev = STREAM_DECODE;
1270 kfree(str_info->decode_ibuf);
1271 str_info->decode_ibuf = NULL;
1272 return retval;
1273 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree