1 /* linux/arch/arm/mach-msm/qdsp5/audio_amrnb.c
3 * amrnb audio decoder device
5 * Copyright (c) 2008 QUALCOMM USA, INC.
7 * Based on the mp3 native driver in arch/arm/mach-msm/qdsp5/audio_mp3.c
9 * Copyright (C) 2008 Google, Inc.
10 * Copyright (C) 2008 HTC Corporation
12 * All source code in this file is licensed under the following license except
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License version 2 as published
17 * by the Free Software Foundation.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
23 * See the GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, you can find it at http://www.fsf.org
28 #include <linux/module.h>
30 #include <linux/miscdevice.h>
31 #include <linux/uaccess.h>
32 #include <linux/kthread.h>
33 #include <linux/wait.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/gfp.h>
37 #include <linux/delay.h>
39 #include <asm/atomic.h>
40 #include <asm/ioctls.h>
41 #include <mach/msm_adsp.h>
42 #include <linux/msm_audio.h>
45 #include <mach/qdsp5/qdsp5audppcmdi.h>
46 #include <mach/qdsp5/qdsp5audppmsg.h>
47 #include <mach/qdsp5/qdsp5audplaycmdi.h>
48 #include <mach/qdsp5/qdsp5audplaymsg.h>
50 /* for queue ids - should be relative to module number*/
55 #define dprintk(format, arg...) \
56 printk(KERN_DEBUG format, ## arg)
58 #define dprintk(format, arg...) do {} while (0)
61 #define BUFSZ 1024 /* Hold minimum 700ms voice data */
62 #define DMASZ (BUFSZ * 2)
64 #define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF
65 #define AUDDEC_DEC_AMRNB 10
67 #define PCM_BUFSZ_MIN 1600 /* 100ms worth of data */
68 #define AMRNB_DECODED_FRSZ 320 /* AMR-NB 20ms 8KHz mono PCM size */
69 #define PCM_BUF_MAX_COUNT 5 /* DSP only accepts 5 buffers at most
70 but support 2 buffers currently */
71 #define ROUTING_MODE_FTRT 1
72 #define ROUTING_MODE_RT 2
73 /* Decoder status received from AUDPPTASK */
74 #define AUDPP_DEC_STATUS_SLEEP 0
75 #define AUDPP_DEC_STATUS_INIT 1
76 #define AUDPP_DEC_STATUS_CFG 2
77 #define AUDPP_DEC_STATUS_PLAY 3
82 unsigned used
; /* Input usage actual DSP produced PCM size */
93 uint8_t out_needed
; /* number of buffers the dsp is waiting for */
98 struct mutex write_lock
;
99 wait_queue_head_t write_wait
;
101 /* Host PCM section */
102 struct buffer in
[PCM_BUF_MAX_COUNT
];
103 struct mutex read_lock
;
104 wait_queue_head_t read_wait
; /* Wait queue for read */
105 char *read_data
; /* pointer to reader buffer */
106 dma_addr_t read_phys
; /* physical address of reader buffer */
107 uint8_t read_next
; /* index to input buffers to be read next */
108 uint8_t fill_next
; /* index to buffer that DSP should be filling */
109 uint8_t pcm_buf_count
; /* number of pcm buffer allocated */
110 /* ---- End of Host PCM section */
112 struct msm_adsp_module
*audplay
;
114 struct audmgr audmgr
;
116 /* data allocated for various buffers */
123 uint8_t stopped
:1; /* set when stopped, cleared on flush */
124 uint8_t pcm_feedback
:1;
125 uint8_t buf_refresh
:1;
130 uint32_t read_ptr_offset
;
133 struct audpp_cmd_cfg_adec_params_amrnb
{
134 audpp_cmd_cfg_adec_params_common common
;
135 unsigned short stereo_cfg
;
136 } __attribute__((packed
)) ;
138 static int auddec_dsp_config(struct audio
*audio
, int enable
);
139 static void audpp_cmd_cfg_adec_params(struct audio
*audio
);
140 static void audpp_cmd_cfg_routing_mode(struct audio
*audio
);
141 static void audamrnb_send_data(struct audio
*audio
, unsigned needed
);
142 static void audamrnb_config_hostpcm(struct audio
*audio
);
143 static void audamrnb_buffer_refresh(struct audio
*audio
);
144 static void audamrnb_dsp_event(void *private, unsigned id
, uint16_t *msg
);
146 /* must be called with audio->lock held */
147 static int audamrnb_enable(struct audio
*audio
)
149 struct audmgr_config cfg
;
152 dprintk("audamrnb_enable()\n");
158 audio
->out_needed
= 0;
160 cfg
.tx_rate
= RPC_AUD_DEF_SAMPLE_RATE_NONE
;
161 cfg
.rx_rate
= RPC_AUD_DEF_SAMPLE_RATE_48000
;
162 cfg
.def_method
= RPC_AUD_DEF_METHOD_PLAYBACK
;
163 cfg
.codec
= RPC_AUD_DEF_CODEC_AMR_NB
;
164 cfg
.snd_method
= RPC_SND_METHOD_MIDI
;
166 rc
= audmgr_enable(&audio
->audmgr
, &cfg
);
170 if (msm_adsp_enable(audio
->audplay
)) {
171 pr_err("audio: msm_adsp_enable(audplay) failed\n");
172 audmgr_disable(&audio
->audmgr
);
176 if (audpp_enable(audio
->dec_id
, audamrnb_dsp_event
, audio
)) {
177 pr_err("audio: audpp_enable() failed\n");
178 msm_adsp_disable(audio
->audplay
);
179 audmgr_disable(&audio
->audmgr
);
186 /* must be called with audio->lock held */
187 static int audamrnb_disable(struct audio
*audio
)
189 dprintk("audamrnb_disable()\n");
190 if (audio
->enabled
) {
192 auddec_dsp_config(audio
, 0);
193 wake_up(&audio
->write_wait
);
194 wake_up(&audio
->read_wait
);
195 msm_adsp_disable(audio
->audplay
);
196 audpp_disable(audio
->dec_id
, audio
);
197 audmgr_disable(&audio
->audmgr
);
198 audio
->out_needed
= 0;
203 /* ------------------- dsp --------------------- */
204 static void audamrnb_update_pcm_buf_entry(struct audio
*audio
,
210 spin_lock_irqsave(&audio
->dsp_lock
, flags
);
211 for (index
= 0; index
< payload
[1]; index
++) {
212 if (audio
->in
[audio
->fill_next
].addr
==
213 payload
[2 + index
* 2]) {
214 dprintk("audamrnb_update_pcm_buf_entry: in[%d] ready\n",
216 audio
->in
[audio
->fill_next
].used
=
217 payload
[3 + index
* 2];
218 if ((++audio
->fill_next
) == audio
->pcm_buf_count
)
219 audio
->fill_next
= 0;
223 ("audamrnb_update_pcm_buf_entry: expected=%x ret=%x\n"
224 , audio
->in
[audio
->fill_next
].addr
,
225 payload
[1 + index
* 2]);
229 if (audio
->in
[audio
->fill_next
].used
== 0) {
230 audamrnb_buffer_refresh(audio
);
232 dprintk("audamrnb_update_pcm_buf_entry: read cannot keep up\n");
233 audio
->buf_refresh
= 1;
236 spin_unlock_irqrestore(&audio
->dsp_lock
, flags
);
237 wake_up(&audio
->read_wait
);
240 static void audplay_dsp_event(void *data
, unsigned id
, size_t len
,
241 void (*getevent
) (void *ptr
, size_t len
))
243 struct audio
*audio
= data
;
245 getevent(msg
, sizeof(msg
));
247 dprintk("audplay_dsp_event: msg_id=%x\n", id
);
250 case AUDPLAY_MSG_DEC_NEEDS_DATA
:
251 audamrnb_send_data(audio
, 1);
254 case AUDPLAY_MSG_BUFFER_UPDATE
:
255 audamrnb_update_pcm_buf_entry(audio
, msg
);
259 pr_err("unexpected message from decoder \n");
263 static void audamrnb_dsp_event(void *private, unsigned id
, uint16_t *msg
)
265 struct audio
*audio
= private;
268 case AUDPP_MSG_STATUS_MSG
:{
269 unsigned status
= msg
[1];
272 case AUDPP_DEC_STATUS_SLEEP
:
273 dprintk("decoder status: sleep \n");
276 case AUDPP_DEC_STATUS_INIT
:
277 dprintk("decoder status: init \n");
278 audpp_cmd_cfg_routing_mode(audio
);
281 case AUDPP_DEC_STATUS_CFG
:
282 dprintk("decoder status: cfg \n");
284 case AUDPP_DEC_STATUS_PLAY
:
285 dprintk("decoder status: play \n");
286 if (audio
->pcm_feedback
) {
287 audamrnb_config_hostpcm(audio
);
288 audamrnb_buffer_refresh(audio
);
292 pr_err("unknown decoder status \n");
297 case AUDPP_MSG_CFG_MSG
:
298 if (msg
[0] == AUDPP_MSG_ENA_ENA
) {
299 dprintk("audamrnb_dsp_event: CFG_MSG ENABLE\n");
300 auddec_dsp_config(audio
, 1);
301 audio
->out_needed
= 0;
303 audpp_set_volume_and_pan(audio
->dec_id
, audio
->volume
,
305 audpp_avsync(audio
->dec_id
, 22050);
306 } else if (msg
[0] == AUDPP_MSG_ENA_DIS
) {
307 dprintk("audamrnb_dsp_event: CFG_MSG DISABLE\n");
308 audpp_avsync(audio
->dec_id
, 0);
311 pr_err("audamrnb_dsp_event: CFG_MSG %d?\n", msg
[0]);
314 case AUDPP_MSG_ROUTING_ACK
:
315 dprintk("audamrnb_dsp_event: ROUTING_ACK mode=%d\n", msg
[1]);
316 audpp_cmd_cfg_adec_params(audio
);
320 pr_err("audamrnb_dsp_event: UNKNOWN (%d)\n", id
);
325 struct msm_adsp_ops audplay_adsp_ops_amrnb
= {
326 .event
= audplay_dsp_event
,
329 #define audplay_send_queue0(audio, cmd, len) \
330 msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \
333 static int auddec_dsp_config(struct audio
*audio
, int enable
)
335 audpp_cmd_cfg_dec_type cmd
;
337 memset(&cmd
, 0, sizeof(cmd
));
338 cmd
.cmd_id
= AUDPP_CMD_CFG_DEC_TYPE
;
340 cmd
.dec0_cfg
= AUDPP_CMD_UPDATDE_CFG_DEC
|
341 AUDPP_CMD_ENA_DEC_V
| AUDDEC_DEC_AMRNB
;
343 cmd
.dec0_cfg
= AUDPP_CMD_UPDATDE_CFG_DEC
| AUDPP_CMD_DIS_DEC_V
;
345 return audpp_send_queue1(&cmd
, sizeof(cmd
));
348 static void audpp_cmd_cfg_adec_params(struct audio
*audio
)
350 struct audpp_cmd_cfg_adec_params_amrnb cmd
;
352 memset(&cmd
, 0, sizeof(cmd
));
353 cmd
.common
.cmd_id
= AUDPP_CMD_CFG_ADEC_PARAMS
;
354 cmd
.common
.length
= AUDPP_CMD_CFG_ADEC_PARAMS_V13K_LEN
;
355 cmd
.common
.dec_id
= audio
->dec_id
;
356 cmd
.common
.input_sampling_frequency
= 8000;
357 cmd
.stereo_cfg
= AUDPP_CMD_PCM_INTF_MONO_V
;
359 audpp_send_queue2(&cmd
, sizeof(cmd
));
362 static void audpp_cmd_cfg_routing_mode(struct audio
*audio
)
364 struct audpp_cmd_routing_mode cmd
;
365 dprintk("audpp_cmd_cfg_routing_mode()\n");
366 memset(&cmd
, 0, sizeof(cmd
));
367 cmd
.cmd_id
= AUDPP_CMD_ROUTING_MODE
;
368 cmd
.object_number
= audio
->dec_id
;
369 if (audio
->pcm_feedback
)
370 cmd
.routing_mode
= ROUTING_MODE_FTRT
;
372 cmd
.routing_mode
= ROUTING_MODE_RT
;
374 audpp_send_queue1(&cmd
, sizeof(cmd
));
377 static int audplay_dsp_send_data_avail(struct audio
*audio
,
378 unsigned idx
, unsigned len
)
380 audplay_cmd_bitstream_data_avail cmd
;
382 cmd
.cmd_id
= AUDPLAY_CMD_BITSTREAM_DATA_AVAIL
;
383 cmd
.decoder_id
= audio
->dec_id
;
384 cmd
.buf_ptr
= audio
->out
[idx
].addr
;
385 cmd
.buf_size
= len
/ 2;
386 cmd
.partition_number
= 0;
387 return audplay_send_queue0(audio
, &cmd
, sizeof(cmd
));
390 static void audamrnb_buffer_refresh(struct audio
*audio
)
392 struct audplay_cmd_buffer_refresh refresh_cmd
;
394 refresh_cmd
.cmd_id
= AUDPLAY_CMD_BUFFER_REFRESH
;
395 refresh_cmd
.num_buffers
= 1;
396 refresh_cmd
.buf0_address
= audio
->in
[audio
->fill_next
].addr
;
397 refresh_cmd
.buf0_length
= audio
->in
[audio
->fill_next
].size
-
398 (audio
->in
[audio
->fill_next
].size
% AMRNB_DECODED_FRSZ
);
399 refresh_cmd
.buf_read_count
= 0;
400 dprintk("audplay_buffer_fresh: buf0_addr=%x buf0_len=%d\n",
401 refresh_cmd
.buf0_address
, refresh_cmd
.buf0_length
);
402 (void)audplay_send_queue0(audio
, &refresh_cmd
, sizeof(refresh_cmd
));
405 static void audamrnb_config_hostpcm(struct audio
*audio
)
407 struct audplay_cmd_hpcm_buf_cfg cfg_cmd
;
409 dprintk("audamrnb_config_hostpcm()\n");
410 cfg_cmd
.cmd_id
= AUDPLAY_CMD_HPCM_BUF_CFG
;
411 cfg_cmd
.max_buffers
= audio
->pcm_buf_count
;
412 cfg_cmd
.byte_swap
= 0;
413 cfg_cmd
.hostpcm_config
= (0x8000) | (0x4000);
414 cfg_cmd
.feedback_frequency
= 1;
415 cfg_cmd
.partition_number
= 0;
416 (void)audplay_send_queue0(audio
, &cfg_cmd
, sizeof(cfg_cmd
));
420 static void audamrnb_send_data(struct audio
*audio
, unsigned needed
)
422 struct buffer
*frame
;
425 spin_lock_irqsave(&audio
->dsp_lock
, flags
);
430 /* We were called from the callback because the DSP
431 * requested more data. Note that the DSP does want
432 * more data, and if a buffer was in-flight, mark it
433 * as available (since the DSP must now be done with
436 audio
->out_needed
= 1;
437 frame
= audio
->out
+ audio
->out_tail
;
438 if (frame
->used
== 0xffffffff) {
440 audio
->out_tail
^= 1;
441 wake_up(&audio
->write_wait
);
445 if (audio
->out_needed
) {
446 /* If the DSP currently wants data and we have a
447 * buffer available, we will send it and reset
448 * the needed flag. We'll mark the buffer as in-flight
449 * so that it won't be recycled until the next buffer
453 frame
= audio
->out
+ audio
->out_tail
;
455 BUG_ON(frame
->used
== 0xffffffff);
456 /* printk("frame %d busy\n", audio->out_tail); */
457 audplay_dsp_send_data_avail(audio
, audio
->out_tail
,
459 frame
->used
= 0xffffffff;
460 audio
->out_needed
= 0;
464 spin_unlock_irqrestore(&audio
->dsp_lock
, flags
);
467 /* ------------------- device --------------------- */
469 static void audamrnb_flush(struct audio
*audio
)
471 audio
->out
[0].used
= 0;
472 audio
->out
[1].used
= 0;
476 atomic_set(&audio
->out_bytes
, 0);
479 static void audamrnb_flush_pcm_buf(struct audio
*audio
)
483 for (index
= 0; index
< PCM_BUF_MAX_COUNT
; index
++)
484 audio
->in
[index
].used
= 0;
486 audio
->read_next
= 0;
487 audio
->fill_next
= 0;
490 static long audamrnb_ioctl(struct file
*file
, unsigned int cmd
,
493 struct audio
*audio
= file
->private_data
;
496 dprintk("audamrnb_ioctl() cmd = %d\n", cmd
);
498 if (cmd
== AUDIO_GET_STATS
) {
499 struct msm_audio_stats stats
;
500 stats
.byte_count
= audpp_avsync_byte_count(audio
->dec_id
);
501 stats
.sample_count
= audpp_avsync_sample_count(audio
->dec_id
);
502 if (copy_to_user((void *)arg
, &stats
, sizeof(stats
)))
506 if (cmd
== AUDIO_SET_VOLUME
) {
508 spin_lock_irqsave(&audio
->dsp_lock
, flags
);
511 audpp_set_volume_and_pan(audio
->dec_id
, arg
, 0);
512 spin_unlock_irqrestore(&audio
->dsp_lock
, flags
);
515 mutex_lock(&audio
->lock
);
518 rc
= audamrnb_enable(audio
);
521 rc
= audamrnb_disable(audio
);
525 if (audio
->stopped
) {
526 /* Make sure we're stopped and we wake any threads
527 * that might be blocked holding the write_lock.
528 * While audio->stopped write threads will always
531 wake_up(&audio
->write_wait
);
532 mutex_lock(&audio
->write_lock
);
533 audamrnb_flush(audio
);
534 mutex_unlock(&audio
->write_lock
);
535 wake_up(&audio
->read_wait
);
536 mutex_lock(&audio
->read_lock
);
537 audamrnb_flush_pcm_buf(audio
);
538 mutex_unlock(&audio
->read_lock
);
542 case AUDIO_SET_CONFIG
:{
543 dprintk("AUDIO_SET_CONFIG not applicable \n");
546 case AUDIO_GET_CONFIG
:{
547 struct msm_audio_config config
;
548 config
.buffer_size
= BUFSZ
;
549 config
.buffer_count
= 2;
550 config
.sample_rate
= 8000;
551 config
.channel_count
= 1;
552 config
.unused
[0] = 0;
553 config
.unused
[1] = 0;
554 config
.unused
[2] = 0;
555 config
.unused
[3] = 0;
556 if (copy_to_user((void *)arg
, &config
,
564 case AUDIO_GET_PCM_CONFIG
:{
565 struct msm_audio_pcm_config config
;
566 config
.pcm_feedback
= 0;
567 config
.buffer_count
= PCM_BUF_MAX_COUNT
;
568 config
.buffer_size
= PCM_BUFSZ_MIN
;
569 if (copy_to_user((void *)arg
, &config
,
576 case AUDIO_SET_PCM_CONFIG
:{
577 struct msm_audio_pcm_config config
;
579 (&config
, (void *)arg
, sizeof(config
))) {
583 if ((config
.buffer_count
> PCM_BUF_MAX_COUNT
) ||
584 (config
.buffer_count
== 1))
585 config
.buffer_count
= PCM_BUF_MAX_COUNT
;
587 if (config
.buffer_size
< PCM_BUFSZ_MIN
)
588 config
.buffer_size
= PCM_BUFSZ_MIN
;
590 /* Check if pcm feedback is required */
591 if ((config
.pcm_feedback
) && (!audio
->read_data
)) {
592 dprintk("audamrnb_ioctl: allocate PCM buf %d\n",
593 config
.buffer_count
*
596 dma_alloc_coherent(NULL
,
601 if (!audio
->read_data
) {
602 pr_err("audamrnb_ioctl: no mem for pcm buf\n");
607 audio
->pcm_feedback
= 1;
608 audio
->buf_refresh
= 0;
609 audio
->pcm_buf_count
=
611 audio
->read_next
= 0;
612 audio
->fill_next
= 0;
615 index
< config
.buffer_count
; index
++) {
616 audio
->in
[index
].data
=
617 audio
->read_data
+ offset
;
618 audio
->in
[index
].addr
=
619 audio
->read_phys
+ offset
;
620 audio
->in
[index
].size
=
622 audio
->in
[index
].used
= 0;
623 offset
+= config
.buffer_size
;
635 mutex_unlock(&audio
->lock
);
639 static ssize_t
audamrnb_read(struct file
*file
, char __user
*buf
, size_t count
,
642 struct audio
*audio
= file
->private_data
;
643 const char __user
*start
= buf
;
646 if (!audio
->pcm_feedback
)
647 return 0; /* PCM feedback is not enabled. Nothing to read */
649 mutex_lock(&audio
->read_lock
);
650 dprintk("audamrnb_read() %d \n", count
);
652 rc
= wait_event_interruptible(audio
->read_wait
,
653 (audio
->in
[audio
->read_next
].
654 used
> 0) || (audio
->stopped
));
659 if (audio
->stopped
) {
664 if (count
< audio
->in
[audio
->read_next
].used
) {
665 /* Read must happen in frame boundary. Since driver does
666 * not know frame size, read count must be greater or
667 * equal to size of PCM samples
669 dprintk("audamrnb_read:read stop - partial frame\n");
672 dprintk("audamrnb_read: read from in[%d]\n",
675 (buf
, audio
->in
[audio
->read_next
].data
,
676 audio
->in
[audio
->read_next
].used
)) {
677 pr_err("audamrnb_read: invalid addr %x \n",
682 count
-= audio
->in
[audio
->read_next
].used
;
683 buf
+= audio
->in
[audio
->read_next
].used
;
684 audio
->in
[audio
->read_next
].used
= 0;
685 if ((++audio
->read_next
) == audio
->pcm_buf_count
)
686 audio
->read_next
= 0;
690 if (audio
->buf_refresh
) {
691 audio
->buf_refresh
= 0;
692 dprintk("audamrnb_read: kick start pcm feedback again\n");
693 audamrnb_buffer_refresh(audio
);
696 mutex_unlock(&audio
->read_lock
);
701 dprintk("audamrnb_read: read %d bytes\n", rc
);
705 static ssize_t
audamrnb_write(struct file
*file
, const char __user
*buf
,
706 size_t count
, loff_t
*pos
)
708 struct audio
*audio
= file
->private_data
;
709 const char __user
*start
= buf
;
710 struct buffer
*frame
;
716 dprintk("audamrnb_write() \n");
717 mutex_lock(&audio
->write_lock
);
719 frame
= audio
->out
+ audio
->out_head
;
720 rc
= wait_event_interruptible(audio
->write_wait
,
722 || (audio
->stopped
));
723 dprintk("audamrnb_write() buffer available\n");
726 if (audio
->stopped
) {
730 xfer
= (count
> frame
->size
) ? frame
->size
: count
;
731 if (copy_from_user(frame
->data
, buf
, xfer
)) {
737 audio
->out_head
^= 1;
741 audamrnb_send_data(audio
, 0);
744 mutex_unlock(&audio
->write_lock
);
750 static int audamrnb_release(struct inode
*inode
, struct file
*file
)
752 struct audio
*audio
= file
->private_data
;
754 dprintk("audamrnb_release()\n");
756 mutex_lock(&audio
->lock
);
757 audamrnb_disable(audio
);
758 audamrnb_flush(audio
);
759 audamrnb_flush_pcm_buf(audio
);
760 msm_adsp_put(audio
->audplay
);
761 audio
->audplay
= NULL
;
763 dma_free_coherent(NULL
, DMASZ
, audio
->data
, audio
->phys
);
765 if (audio
->read_data
!= NULL
) {
766 dma_free_coherent(NULL
,
767 audio
->in
[0].size
* audio
->pcm_buf_count
,
768 audio
->read_data
, audio
->read_phys
);
769 audio
->read_data
= NULL
;
771 audio
->pcm_feedback
= 0;
772 mutex_unlock(&audio
->lock
);
776 static struct audio the_amrnb_audio
;
778 static int audamrnb_open(struct inode
*inode
, struct file
*file
)
780 struct audio
*audio
= &the_amrnb_audio
;
783 mutex_lock(&audio
->lock
);
786 pr_err("audio: busy\n");
792 audio
->data
= dma_alloc_coherent(NULL
, DMASZ
,
793 &audio
->phys
, GFP_KERNEL
);
795 pr_err("audio: could not allocate DMA buffers\n");
801 rc
= audmgr_open(&audio
->audmgr
);
805 rc
= msm_adsp_get("AUDPLAY0TASK", &audio
->audplay
,
806 &audplay_adsp_ops_amrnb
, audio
);
808 pr_err("audio: failed to get audplay0 dsp module\n");
809 audmgr_disable(&audio
->audmgr
);
810 dma_free_coherent(NULL
, DMASZ
, audio
->data
, audio
->phys
);
817 audio
->out
[0].data
= audio
->data
+ 0;
818 audio
->out
[0].addr
= audio
->phys
+ 0;
819 audio
->out
[0].size
= BUFSZ
;
821 audio
->out
[1].data
= audio
->data
+ BUFSZ
;
822 audio
->out
[1].addr
= audio
->phys
+ BUFSZ
;
823 audio
->out
[1].size
= BUFSZ
;
825 audio
->volume
= 0x2000; /* Q13 1.0 */
827 audamrnb_flush(audio
);
829 file
->private_data
= audio
;
833 mutex_unlock(&audio
->lock
);
837 static struct file_operations audio_amrnb_fops
= {
838 .owner
= THIS_MODULE
,
839 .open
= audamrnb_open
,
840 .release
= audamrnb_release
,
841 .read
= audamrnb_read
,
842 .write
= audamrnb_write
,
843 .unlocked_ioctl
= audamrnb_ioctl
,
846 struct miscdevice audio_amrnb_misc
= {
847 .minor
= MISC_DYNAMIC_MINOR
,
849 .fops
= &audio_amrnb_fops
,
852 static int __init
audamrnb_init(void)
854 mutex_init(&the_amrnb_audio
.lock
);
855 mutex_init(&the_amrnb_audio
.write_lock
);
856 mutex_init(&the_amrnb_audio
.read_lock
);
857 spin_lock_init(&the_amrnb_audio
.dsp_lock
);
858 init_waitqueue_head(&the_amrnb_audio
.write_wait
);
859 init_waitqueue_head(&the_amrnb_audio
.read_wait
);
860 the_amrnb_audio
.read_data
= NULL
;
861 return misc_register(&audio_amrnb_misc
);
864 static void __exit
audamrnb_exit(void)
866 misc_deregister(&audio_amrnb_misc
);
869 module_init(audamrnb_init
);
870 module_exit(audamrnb_exit
);
872 MODULE_DESCRIPTION("MSM AMR-NB driver");
873 MODULE_LICENSE("GPL v2");
874 MODULE_AUTHOR("QUALCOMM Inc");