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[net-next-2.6.git] / drivers / staging / dream / qdsp5 / audio_out.c
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caff4cae
IM		 1/* arch/arm/mach-msm/qdsp5/audio_out.c
2 *
3 * pcm audio output device
4 *
5 * Copyright (C) 2008 Google, Inc.
6 * Copyright (C) 2008 HTC Corporation
7 *
8 * This software is licensed under the terms of the GNU General Public
9 * License version 2, as published by the Free Software Foundation, and
10 * may be copied, distributed, and modified under those terms.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 */
18
19#include <linux/module.h>
20#include <linux/fs.h>
21#include <linux/miscdevice.h>
22#include <linux/uaccess.h>
23#include <linux/kthread.h>
24#include <linux/wait.h>
25#include <linux/dma-mapping.h>
26#include <linux/debugfs.h>
27#include <linux/delay.h>
28#include <linux/wakelock.h>
29
30#include <linux/msm_audio.h>
31
32#include <asm/atomic.h>
33#include <asm/ioctls.h>
34#include <mach/msm_adsp.h>
35
36#include "audmgr.h"
37
38#include <mach/qdsp5/qdsp5audppcmdi.h>
39#include <mach/qdsp5/qdsp5audppmsg.h>
40
caff4cae
IM		 41#include "evlog.h"
42
43#define LOG_AUDIO_EVENTS 1
44#define LOG_AUDIO_FAULTS 0
45
46enum {
47 EV_NULL,
48 EV_OPEN,
49 EV_WRITE,
50 EV_RETURN,
51 EV_IOCTL,
52 EV_WRITE_WAIT,
53 EV_WAIT_EVENT,
54 EV_FILL_BUFFER,
55 EV_SEND_BUFFER,
56 EV_DSP_EVENT,
57 EV_ENABLE,
58};
59
60#if (LOG_AUDIO_EVENTS != 1)
61static inline void LOG(unsigned id, unsigned arg) {}
62#else
63static const char *pcm_log_strings[] = {
64 "NULL",
65 "OPEN",
66 "WRITE",
67 "RETURN",
68 "IOCTL",
69 "WRITE_WAIT",
70 "WAIT_EVENT",
71 "FILL_BUFFER",
72 "SEND_BUFFER",
73 "DSP_EVENT",
74 "ENABLE",
75};
76
77DECLARE_LOG(pcm_log, 64, pcm_log_strings);
78
79static int __init _pcm_log_init(void)
80{
81 return ev_log_init(&pcm_log);
82}
83module_init(_pcm_log_init);
84
85#define LOG(id,arg) ev_log_write(&pcm_log, id, arg)
86#endif
87
88
89
90
91
92#define BUFSZ (960 * 5)
93#define DMASZ (BUFSZ * 2)
94
95#define AUDPP_CMD_CFG_OBJ_UPDATE 0x8000
96#define AUDPP_CMD_EQ_FLAG_DIS 0x0000
97#define AUDPP_CMD_EQ_FLAG_ENA -1
98#define AUDPP_CMD_IIR_FLAG_DIS 0x0000
99#define AUDPP_CMD_IIR_FLAG_ENA -1
100
101#define AUDPP_CMD_IIR_TUNING_FILTER 1
102#define AUDPP_CMD_EQUALIZER 2
103#define AUDPP_CMD_ADRC 3
104
105#define ADRC_ENABLE 0x0001
106#define EQ_ENABLE 0x0002
107#define IIR_ENABLE 0x0004
108
109struct adrc_filter {
110 uint16_t compression_th;
111 uint16_t compression_slope;
112 uint16_t rms_time;
113 uint16_t attack_const_lsw;
114 uint16_t attack_const_msw;
115 uint16_t release_const_lsw;
116 uint16_t release_const_msw;
117 uint16_t adrc_system_delay;
118};
119
120struct eqalizer {
121 uint16_t num_bands;
122 uint16_t eq_params[132];
123};
124
125struct rx_iir_filter {
126 uint16_t num_bands;
127 uint16_t iir_params[48];
128};
129
130typedef struct {
131 audpp_cmd_cfg_object_params_common common;
132 uint16_t eq_flag;
133 uint16_t num_bands;
134 uint16_t eq_params[132];
135} audpp_cmd_cfg_object_params_eq;
136
137typedef struct {
138 audpp_cmd_cfg_object_params_common common;
139 uint16_t active_flag;
140 uint16_t num_bands;
141 uint16_t iir_params[48];
142} audpp_cmd_cfg_object_params_rx_iir;
143
144struct buffer {
145 void *data;
146 unsigned size;
147 unsigned used;
148 unsigned addr;
149};
150
151struct audio {
152 struct buffer out[2];
153
154 spinlock_t dsp_lock;
155
156 uint8_t out_head;
157 uint8_t out_tail;
158 uint8_t out_needed; /* number of buffers the dsp is waiting for */
159
160 atomic_t out_bytes;
161
162 struct mutex lock;
163 struct mutex write_lock;
164 wait_queue_head_t wait;
165
166 /* configuration to use on next enable */
167 uint32_t out_sample_rate;
168 uint32_t out_channel_mode;
169 uint32_t out_weight;
170 uint32_t out_buffer_size;
171
172 struct audmgr audmgr;
173
174 /* data allocated for various buffers */
175 char *data;
176 dma_addr_t phys;
177
178 int opened;
179 int enabled;
180 int running;
181 int stopped; /* set when stopped, cleared on flush */
182 unsigned volume;
183
184 struct wake_lock wakelock;
185 struct wake_lock idlelock;
186
187 int adrc_enable;
188 struct adrc_filter adrc;
189
190 int eq_enable;
191 struct eqalizer eq;
192
193 int rx_iir_enable;
194 struct rx_iir_filter iir;
195};
196
197static void audio_prevent_sleep(struct audio *audio)
198{
199 printk(KERN_INFO "++++++++++++++++++++++++++++++\n");
200 wake_lock(&audio->wakelock);
201 wake_lock(&audio->idlelock);
202}
203
204static void audio_allow_sleep(struct audio *audio)
205{
206 wake_unlock(&audio->wakelock);
207 wake_unlock(&audio->idlelock);
208 printk(KERN_INFO "------------------------------\n");
209}
210
211static int audio_dsp_out_enable(struct audio *audio, int yes);
212static int audio_dsp_send_buffer(struct audio *audio, unsigned id, unsigned len);
213static int audio_dsp_set_adrc(struct audio *audio);
214static int audio_dsp_set_eq(struct audio *audio);
215static int audio_dsp_set_rx_iir(struct audio *audio);
216
217static void audio_dsp_event(void *private, unsigned id, uint16_t *msg);
218
219/* must be called with audio->lock held */
220static int audio_enable(struct audio *audio)
221{
222 struct audmgr_config cfg;
223 int rc;
224
225 pr_info("audio_enable()\n");
226
227 if (audio->enabled)
228 return 0;
229
230 /* refuse to start if we're not ready */
231 if (!audio->out[0].used || !audio->out[1].used)
232 return -EIO;
233
234 /* we start buffers 0 and 1, so buffer 0 will be the
235 * next one the dsp will want
236 */
237 audio->out_tail = 0;
238 audio->out_needed = 0;
239
240 cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE;
241 cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000;
242 cfg.def_method = RPC_AUD_DEF_METHOD_HOST_PCM;
243 cfg.codec = RPC_AUD_DEF_CODEC_PCM;
244 cfg.snd_method = RPC_SND_METHOD_MIDI;
245
246 audio_prevent_sleep(audio);
247 rc = audmgr_enable(&audio->audmgr, &cfg);
248 if (rc < 0) {
249 audio_allow_sleep(audio);
250 return rc;
251 }
252
253 if (audpp_enable(-1, audio_dsp_event, audio)) {
254 pr_err("audio: audpp_enable() failed\n");
255 audmgr_disable(&audio->audmgr);
256 audio_allow_sleep(audio);
257 return -ENODEV;
258 }
259
260 audio->enabled = 1;
caff4cae
IM		 261 return 0;
262}
263
264/* must be called with audio->lock held */
265static int audio_disable(struct audio *audio)
266{
267 pr_info("audio_disable()\n");
268 if (audio->enabled) {
269 audio->enabled = 0;
270 audio_dsp_out_enable(audio, 0);
271
272 audpp_disable(-1, audio);
273
274 wake_up(&audio->wait);
275 audmgr_disable(&audio->audmgr);
276 audio->out_needed = 0;
277 audio_allow_sleep(audio);
278 }
279 return 0;
280}
281
282/* ------------------- dsp --------------------- */
283static void audio_dsp_event(void *private, unsigned id, uint16_t *msg)
284{
285 struct audio *audio = private;
286 struct buffer *frame;
287 unsigned long flags;
288
289 LOG(EV_DSP_EVENT, id);
290 switch (id) {
291 case AUDPP_MSG_HOST_PCM_INTF_MSG: {
292 unsigned id = msg[2];
293 unsigned idx = msg[3] - 1;
294
295 /* pr_info("audio_dsp_event: HOST_PCM id %d idx %d\n", id, idx); */
296 if (id != AUDPP_MSG_HOSTPCM_ID_ARM_RX) {
297 pr_err("bogus id\n");
298 break;
299 }
300 if (idx > 1) {
301 pr_err("bogus buffer idx\n");
302 break;
303 }
304
305 spin_lock_irqsave(&audio->dsp_lock, flags);
306 if (audio->running) {
307 atomic_add(audio->out[idx].used, &audio->out_bytes);
308 audio->out[idx].used = 0;
309
310 frame = audio->out + audio->out_tail;
311 if (frame->used) {
312 audio_dsp_send_buffer(
313 audio, audio->out_tail, frame->used);
314 audio->out_tail ^= 1;
315 } else {
316 audio->out_needed++;
317 }
318 wake_up(&audio->wait);
319 }
320 spin_unlock_irqrestore(&audio->dsp_lock, flags);
321 break;
322 }
323 case AUDPP_MSG_PCMDMAMISSED:
324 pr_info("audio_dsp_event: PCMDMAMISSED %d\n", msg[0]);
325 break;
326 case AUDPP_MSG_CFG_MSG:
327 if (msg[0] == AUDPP_MSG_ENA_ENA) {
328 LOG(EV_ENABLE, 1);
329 pr_info("audio_dsp_event: CFG_MSG ENABLE\n");
330 audio->out_needed = 0;
331 audio->running = 1;
332 audpp_set_volume_and_pan(5, audio->volume, 0);
333 audio_dsp_set_adrc(audio);
334 audio_dsp_set_eq(audio);
335 audio_dsp_set_rx_iir(audio);
336 audio_dsp_out_enable(audio, 1);
337 } else if (msg[0] == AUDPP_MSG_ENA_DIS) {
338 LOG(EV_ENABLE, 0);
339 pr_info("audio_dsp_event: CFG_MSG DISABLE\n");
340 audio->running = 0;
341 } else {
342 pr_err("audio_dsp_event: CFG_MSG %d?\n", msg[0]);
343 }
344 break;
345 default:
346 pr_err("audio_dsp_event: UNKNOWN (%d)\n", id);
347 }
348}
349
350static int audio_dsp_out_enable(struct audio *audio, int yes)
351{
352 audpp_cmd_pcm_intf cmd;
353
354 memset(&cmd, 0, sizeof(cmd));
355 cmd.cmd_id = AUDPP_CMD_PCM_INTF_2;
356 cmd.object_num = AUDPP_CMD_PCM_INTF_OBJECT_NUM;
357 cmd.config = AUDPP_CMD_PCM_INTF_CONFIG_CMD_V;
358 cmd.intf_type = AUDPP_CMD_PCM_INTF_RX_ENA_ARMTODSP_V;
359
360 if (yes) {
361 cmd.write_buf1LSW = audio->out[0].addr;
362 cmd.write_buf1MSW = audio->out[0].addr >> 16;
363 cmd.write_buf1_len = audio->out[0].size;
364 cmd.write_buf2LSW = audio->out[1].addr;
365 cmd.write_buf2MSW = audio->out[1].addr >> 16;
366 cmd.write_buf2_len = audio->out[1].size;
367 cmd.arm_to_rx_flag = AUDPP_CMD_PCM_INTF_ENA_V;
368 cmd.weight_decoder_to_rx = audio->out_weight;
369 cmd.weight_arm_to_rx = 1;
370 cmd.partition_number_arm_to_dsp = 0;
371 cmd.sample_rate = audio->out_sample_rate;
372 cmd.channel_mode = audio->out_channel_mode;
373 }
374
375 return audpp_send_queue2(&cmd, sizeof(cmd));
376}
377
378static int audio_dsp_send_buffer(struct audio *audio, unsigned idx, unsigned len)
379{
380 audpp_cmd_pcm_intf_send_buffer cmd;
381
382 cmd.cmd_id = AUDPP_CMD_PCM_INTF_2;
383 cmd.host_pcm_object = AUDPP_CMD_PCM_INTF_OBJECT_NUM;
384 cmd.config = AUDPP_CMD_PCM_INTF_BUFFER_CMD_V;
385 cmd.intf_type = AUDPP_CMD_PCM_INTF_RX_ENA_ARMTODSP_V;
386 cmd.dsp_to_arm_buf_id = 0;
387 cmd.arm_to_dsp_buf_id = idx + 1;
388 cmd.arm_to_dsp_buf_len = len;
389
390 LOG(EV_SEND_BUFFER, idx);
391 return audpp_send_queue2(&cmd, sizeof(cmd));
392}
393
394static int audio_dsp_set_adrc(struct audio *audio)
395{
396 audpp_cmd_cfg_object_params_adrc cmd;
397
398 memset(&cmd, 0, sizeof(cmd));
399 cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
400 cmd.common.command_type = AUDPP_CMD_ADRC;
401
402 if (audio->adrc_enable) {
403 cmd.adrc_flag = AUDPP_CMD_ADRC_FLAG_ENA;
404 cmd.compression_th = audio->adrc.compression_th;
405 cmd.compression_slope = audio->adrc.compression_slope;
406 cmd.rms_time = audio->adrc.rms_time;
407 cmd.attack_const_lsw = audio->adrc.attack_const_lsw;
408 cmd.attack_const_msw = audio->adrc.attack_const_msw;
409 cmd.release_const_lsw = audio->adrc.release_const_lsw;
410 cmd.release_const_msw = audio->adrc.release_const_msw;
411 cmd.adrc_system_delay = audio->adrc.adrc_system_delay;
412 } else {
413 cmd.adrc_flag = AUDPP_CMD_ADRC_FLAG_DIS;
414 }
415 return audpp_send_queue3(&cmd, sizeof(cmd));
416}
417
418static int audio_dsp_set_eq(struct audio *audio)
419{
420 audpp_cmd_cfg_object_params_eq cmd;
421
422 memset(&cmd, 0, sizeof(cmd));
423 cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
424 cmd.common.command_type = AUDPP_CMD_EQUALIZER;
425
426 if (audio->eq_enable) {
427 cmd.eq_flag = AUDPP_CMD_EQ_FLAG_ENA;
428 cmd.num_bands = audio->eq.num_bands;
429 memcpy(&cmd.eq_params, audio->eq.eq_params,
430 sizeof(audio->eq.eq_params));
431 } else {
432 cmd.eq_flag = AUDPP_CMD_EQ_FLAG_DIS;
433 }
434 return audpp_send_queue3(&cmd, sizeof(cmd));
435}
436
437static int audio_dsp_set_rx_iir(struct audio *audio)
438{
439 audpp_cmd_cfg_object_params_rx_iir cmd;
440
441 memset(&cmd, 0, sizeof(cmd));
442 cmd.common.comman_cfg = AUDPP_CMD_CFG_OBJ_UPDATE;
443 cmd.common.command_type = AUDPP_CMD_IIR_TUNING_FILTER;
444
445 if (audio->rx_iir_enable) {
446 cmd.active_flag = AUDPP_CMD_IIR_FLAG_ENA;
447 cmd.num_bands = audio->iir.num_bands;
448 memcpy(&cmd.iir_params, audio->iir.iir_params,
449 sizeof(audio->iir.iir_params));
450 } else {
451 cmd.active_flag = AUDPP_CMD_IIR_FLAG_DIS;
452 }
453
454 return audpp_send_queue3(&cmd, sizeof(cmd));
455}
456
457/* ------------------- device --------------------- */
458
459static int audio_enable_adrc(struct audio *audio, int enable)
460{
461 if (audio->adrc_enable != enable) {
462 audio->adrc_enable = enable;
463 if (audio->running)
464 audio_dsp_set_adrc(audio);
465 }
466 return 0;
467}
468
469static int audio_enable_eq(struct audio *audio, int enable)
470{
471 if (audio->eq_enable != enable) {
472 audio->eq_enable = enable;
473 if (audio->running)
474 audio_dsp_set_eq(audio);
475 }
476 return 0;
477}
478
479static int audio_enable_rx_iir(struct audio *audio, int enable)
480{
481 if (audio->rx_iir_enable != enable) {
482 audio->rx_iir_enable = enable;
483 if (audio->running)
484 audio_dsp_set_rx_iir(audio);
485 }
486 return 0;
487}
488
489static void audio_flush(struct audio *audio)
490{
491 audio->out[0].used = 0;
492 audio->out[1].used = 0;
493 audio->out_head = 0;
494 audio->out_tail = 0;
495 audio->stopped = 0;
496}
497
498static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
499{
500 struct audio *audio = file->private_data;
501 int rc;
502
503 if (cmd == AUDIO_GET_STATS) {
504 struct msm_audio_stats stats;
505 stats.byte_count = atomic_read(&audio->out_bytes);
506 if (copy_to_user((void*) arg, &stats, sizeof(stats)))
507 return -EFAULT;
508 return 0;
509 }
510 if (cmd == AUDIO_SET_VOLUME) {
511 unsigned long flags;
512 spin_lock_irqsave(&audio->dsp_lock, flags);
513 audio->volume = arg;
514 if (audio->running)
515 audpp_set_volume_and_pan(6, arg, 0);
516 spin_unlock_irqrestore(&audio->dsp_lock, flags);
517 }
518
519 LOG(EV_IOCTL, cmd);
520 mutex_lock(&audio->lock);
521 switch (cmd) {
522 case AUDIO_START:
523 rc = audio_enable(audio);
524 break;
525 case AUDIO_STOP:
526 rc = audio_disable(audio);
527 audio->stopped = 1;
528 break;
529 case AUDIO_FLUSH:
530 if (audio->stopped) {
531 /* Make sure we're stopped and we wake any threads
532 * that might be blocked holding the write_lock.
533 * While audio->stopped write threads will always
534 * exit immediately.
535 */
536 wake_up(&audio->wait);
537 mutex_lock(&audio->write_lock);
538 audio_flush(audio);
539 mutex_unlock(&audio->write_lock);
540 }
541 case AUDIO_SET_CONFIG: {
542 struct msm_audio_config config;
543 if (copy_from_user(&config, (void*) arg, sizeof(config))) {
544 rc = -EFAULT;
545 break;
546 }
547 if (config.channel_count == 1) {
548 config.channel_count = AUDPP_CMD_PCM_INTF_MONO_V;
549 } else if (config.channel_count == 2) {
550 config.channel_count= AUDPP_CMD_PCM_INTF_STEREO_V;
551 } else {
552 rc = -EINVAL;
553 break;
554 }
555 audio->out_sample_rate = config.sample_rate;
556 audio->out_channel_mode = config.channel_count;
557 rc = 0;
558 break;
559 }
560 case AUDIO_GET_CONFIG: {
561 struct msm_audio_config config;
562 config.buffer_size = BUFSZ;
563 config.buffer_count = 2;
564 config.sample_rate = audio->out_sample_rate;
565 if (audio->out_channel_mode == AUDPP_CMD_PCM_INTF_MONO_V) {
566 config.channel_count = 1;
567 } else {
568 config.channel_count = 2;
569 }
570 config.unused[0] = 0;
571 config.unused[1] = 0;
572 config.unused[2] = 0;
573 config.unused[3] = 0;
574 if (copy_to_user((void*) arg, &config, sizeof(config))) {
575 rc = -EFAULT;
576 } else {
577 rc = 0;
578 }
579 break;
580 }
581 default:
582 rc = -EINVAL;
583 }
584 mutex_unlock(&audio->lock);
585 return rc;
586}
587
588static ssize_t audio_read(struct file *file, char __user *buf, size_t count, loff_t *pos)
589{
590 return -EINVAL;
591}
592
593static inline int rt_policy(int policy)
594{
595 if (unlikely(policy == SCHED_FIFO) || unlikely(policy == SCHED_RR))
596 return 1;
597 return 0;
598}
599
600static inline int task_has_rt_policy(struct task_struct *p)
601{
602 return rt_policy(p->policy);
603}
604
605static ssize_t audio_write(struct file *file, const char __user *buf,
606 size_t count, loff_t *pos)
607{
608 struct sched_param s = { .sched_priority = 1 };
609 struct audio *audio = file->private_data;
610 unsigned long flags;
611 const char __user *start = buf;
612 struct buffer *frame;
613 size_t xfer;
614 int old_prio = current->rt_priority;
615 int old_policy = current->policy;
616 int cap_nice = cap_raised(current_cap(), CAP_SYS_NICE);
617 int rc = 0;
618
619 LOG(EV_WRITE, count | (audio->running << 28) | (audio->stopped << 24));
620
621 /* just for this write, set us real-time */
622 if (!task_has_rt_policy(current)) {
623 struct cred *new = prepare_creds();
624 cap_raise(new->cap_effective, CAP_SYS_NICE);
625 commit_creds(new);
626 sched_setscheduler(current, SCHED_RR, &s);
627 }
628
629 mutex_lock(&audio->write_lock);
630 while (count > 0) {
631 frame = audio->out + audio->out_head;
632
633 LOG(EV_WAIT_EVENT, 0);
634 rc = wait_event_interruptible(audio->wait,
635 (frame->used == 0) || (audio->stopped));
636 LOG(EV_WAIT_EVENT, 1);
637
638 if (rc < 0)
639 break;
640 if (audio->stopped) {
641 rc = -EBUSY;
642 break;
643 }
644 xfer = count > frame->size ? frame->size : count;
645 if (copy_from_user(frame->data, buf, xfer)) {
646 rc = -EFAULT;
647 break;
648 }
649 frame->used = xfer;
650 audio->out_head ^= 1;
651 count -= xfer;
652 buf += xfer;
653
654 spin_lock_irqsave(&audio->dsp_lock, flags);
655 LOG(EV_FILL_BUFFER, audio->out_head ^ 1);
656 frame = audio->out + audio->out_tail;
657 if (frame->used && audio->out_needed) {
658 audio_dsp_send_buffer(audio, audio->out_tail, frame->used);
659 audio->out_tail ^= 1;
660 audio->out_needed--;
661 }
662 spin_unlock_irqrestore(&audio->dsp_lock, flags);
663 }
664
665 mutex_unlock(&audio->write_lock);
666
667 /* restore scheduling policy and priority */
668 if (!rt_policy(old_policy)) {
669 struct sched_param v = { .sched_priority = old_prio };
670 sched_setscheduler(current, old_policy, &v);
671 if (likely(!cap_nice)) {
672 struct cred *new = prepare_creds();
673 cap_lower(new->cap_effective, CAP_SYS_NICE);
674 commit_creds(new);
675 sched_setscheduler(current, SCHED_RR, &s);
676 }
677 }
678
679 LOG(EV_RETURN,(buf > start) ? (buf - start) : rc);
680 if (buf > start)
681 return buf - start;
682 return rc;
683}
684
685static int audio_release(struct inode *inode, struct file *file)
686{
687 struct audio *audio = file->private_data;
688
689 LOG(EV_OPEN, 0);
690 mutex_lock(&audio->lock);
691 audio_disable(audio);
692 audio_flush(audio);
693 audio->opened = 0;
694 mutex_unlock(&audio->lock);
caff4cae
IM		 695 return 0;
696}
697
a5ca2dfc 698static struct audio the_audio;
caff4cae
IM		 699
700static int audio_open(struct inode *inode, struct file *file)
701{
702 struct audio *audio = &the_audio;
703 int rc;
704
705 mutex_lock(&audio->lock);
706
707 if (audio->opened) {
708 pr_err("audio: busy\n");
709 rc = -EBUSY;
710 goto done;
711 }
712
713 if (!audio->data) {
714 audio->data = dma_alloc_coherent(NULL, DMASZ,
715 &audio->phys, GFP_KERNEL);
716 if (!audio->data) {
717 pr_err("audio: could not allocate DMA buffers\n");
718 rc = -ENOMEM;
719 goto done;
720 }
721 }
722
723 rc = audmgr_open(&audio->audmgr);
724 if (rc)
725 goto done;
726
727 audio->out_buffer_size = BUFSZ;
728 audio->out_sample_rate = 44100;
729 audio->out_channel_mode = AUDPP_CMD_PCM_INTF_STEREO_V;
730 audio->out_weight = 100;
731
732 audio->out[0].data = audio->data + 0;
733 audio->out[0].addr = audio->phys + 0;
734 audio->out[0].size = BUFSZ;
735
736 audio->out[1].data = audio->data + BUFSZ;
737 audio->out[1].addr = audio->phys + BUFSZ;
738 audio->out[1].size = BUFSZ;
739
740 audio->volume = 0x2000;
741
742 audio_flush(audio);
743
744 file->private_data = audio;
745 audio->opened = 1;
746 rc = 0;
747 LOG(EV_OPEN, 1);
748done:
749 mutex_unlock(&audio->lock);
750 return rc;
751}
752
753static long audpp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
754{
755 struct audio *audio = file->private_data;
756 int rc = 0, enable;
757 uint16_t enable_mask;
758
759 mutex_lock(&audio->lock);
760 switch (cmd) {
761 case AUDIO_ENABLE_AUDPP:
762 if (copy_from_user(&enable_mask, (void *) arg, sizeof(enable_mask)))
763 goto out_fault;
764
765 enable = (enable_mask & ADRC_ENABLE)? 1 : 0;
766 audio_enable_adrc(audio, enable);
767 enable = (enable_mask & EQ_ENABLE)? 1 : 0;
768 audio_enable_eq(audio, enable);
769 enable = (enable_mask & IIR_ENABLE)? 1 : 0;
770 audio_enable_rx_iir(audio, enable);
771 break;
772
773 case AUDIO_SET_ADRC:
774 if (copy_from_user(&audio->adrc, (void*) arg, sizeof(audio->adrc)))
775 goto out_fault;
776 break;
777
778 case AUDIO_SET_EQ:
779 if (copy_from_user(&audio->eq, (void*) arg, sizeof(audio->eq)))
780 goto out_fault;
781 break;
782
783 case AUDIO_SET_RX_IIR:
784 if (copy_from_user(&audio->iir, (void*) arg, sizeof(audio->iir)))
785 goto out_fault;
786 break;
787
788 default:
789 rc = -EINVAL;
790 }
791
792 goto out;
793
794 out_fault:
795 rc = -EFAULT;
796 out:
797 mutex_unlock(&audio->lock);
798 return rc;
799}
800
801static int audpp_open(struct inode *inode, struct file *file)
802{
803 struct audio *audio = &the_audio;
804
805 file->private_data = audio;
806 return 0;
807}
808
809static struct file_operations audio_fops = {
810 .owner = THIS_MODULE,
811 .open = audio_open,
812 .release = audio_release,
813 .read = audio_read,
814 .write = audio_write,
815 .unlocked_ioctl = audio_ioctl,
816};
817
818static struct file_operations audpp_fops = {
819 .owner = THIS_MODULE,
820 .open = audpp_open,
821 .unlocked_ioctl = audpp_ioctl,
822};
823
824struct miscdevice audio_misc = {
825 .minor = MISC_DYNAMIC_MINOR,
826 .name = "msm_pcm_out",
827 .fops = &audio_fops,
828};
829
830struct miscdevice audpp_misc = {
831 .minor = MISC_DYNAMIC_MINOR,
832 .name = "msm_pcm_ctl",
833 .fops = &audpp_fops,
834};
835
836static int __init audio_init(void)
837{
838 mutex_init(&the_audio.lock);
839 mutex_init(&the_audio.write_lock);
840 spin_lock_init(&the_audio.dsp_lock);
841 init_waitqueue_head(&the_audio.wait);
842 wake_lock_init(&the_audio.wakelock, WAKE_LOCK_SUSPEND, "audio_pcm");
843 wake_lock_init(&the_audio.idlelock, WAKE_LOCK_IDLE, "audio_pcm_idle");
844 return (misc_register(&audio_misc) || misc_register(&audpp_misc));
845}
846
847device_initcall(audio_init);
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