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caff4cae IM |
1 | /* arch/arm/mach-msm/qdsp5/audio_aac.c |
2 | * | |
3 | * aac audio decoder device | |
4 | * | |
5 | * Copyright (C) 2008 Google, Inc. | |
6 | * Copyright (C) 2008 HTC Corporation | |
7 | * Copyright (c) 2008-2009 QUALCOMM USA, INC. | |
8 | * | |
9 | * This software is licensed under the terms of the GNU General Public | |
10 | * License version 2, as published by the Free Software Foundation, and | |
11 | * may be copied, distributed, and modified under those terms. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/fs.h> | |
22 | #include <linux/miscdevice.h> | |
23 | #include <linux/uaccess.h> | |
24 | #include <linux/kthread.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/dma-mapping.h> | |
5a0e3ad6 | 27 | #include <linux/gfp.h> |
caff4cae IM |
28 | |
29 | #include <linux/delay.h> | |
30 | ||
31 | #include <asm/atomic.h> | |
32 | #include <asm/ioctls.h> | |
33 | #include "audmgr.h" | |
34 | ||
35 | #include <mach/msm_adsp.h> | |
36 | #include <mach/msm_audio_aac.h> | |
37 | #include <mach/qdsp5/qdsp5audppcmdi.h> | |
38 | #include <mach/qdsp5/qdsp5audppmsg.h> | |
39 | #include <mach/qdsp5/qdsp5audplaycmdi.h> | |
40 | #include <mach/qdsp5/qdsp5audplaymsg.h> | |
41 | ||
42 | /* for queue ids - should be relative to module number*/ | |
43 | #include "adsp.h" | |
44 | ||
45 | #ifdef DEBUG | |
46 | #define dprintk(format, arg...) \ | |
47 | printk(KERN_DEBUG format, ## arg) | |
48 | #else | |
49 | #define dprintk(format, arg...) do {} while (0) | |
50 | #endif | |
51 | ||
52 | #define BUFSZ 32768 | |
53 | #define DMASZ (BUFSZ * 2) | |
54 | ||
55 | #define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF | |
56 | #define AUDDEC_DEC_AAC 5 | |
57 | ||
58 | #define PCM_BUFSZ_MIN 9600 /* Hold one stereo AAC frame */ | |
59 | #define PCM_BUF_MAX_COUNT 5 /* DSP only accepts 5 buffers at most | |
60 | but support 2 buffers currently */ | |
61 | #define ROUTING_MODE_FTRT 1 | |
62 | #define ROUTING_MODE_RT 2 | |
63 | /* Decoder status received from AUDPPTASK */ | |
64 | #define AUDPP_DEC_STATUS_SLEEP 0 | |
65 | #define AUDPP_DEC_STATUS_INIT 1 | |
66 | #define AUDPP_DEC_STATUS_CFG 2 | |
67 | #define AUDPP_DEC_STATUS_PLAY 3 | |
68 | ||
69 | struct buffer { | |
70 | void *data; | |
71 | unsigned size; | |
72 | unsigned used; /* Input usage actual DSP produced PCM size */ | |
73 | unsigned addr; | |
74 | }; | |
75 | ||
76 | struct audio { | |
77 | struct buffer out[2]; | |
78 | ||
79 | spinlock_t dsp_lock; | |
80 | ||
81 | uint8_t out_head; | |
82 | uint8_t out_tail; | |
83 | uint8_t out_needed; /* number of buffers the dsp is waiting for */ | |
84 | ||
85 | atomic_t out_bytes; | |
86 | ||
87 | struct mutex lock; | |
88 | struct mutex write_lock; | |
89 | wait_queue_head_t write_wait; | |
90 | ||
91 | /* Host PCM section */ | |
92 | struct buffer in[PCM_BUF_MAX_COUNT]; | |
93 | struct mutex read_lock; | |
94 | wait_queue_head_t read_wait; /* Wait queue for read */ | |
95 | char *read_data; /* pointer to reader buffer */ | |
96 | dma_addr_t read_phys; /* physical address of reader buffer */ | |
97 | uint8_t read_next; /* index to input buffers to be read next */ | |
98 | uint8_t fill_next; /* index to buffer that DSP should be filling */ | |
99 | uint8_t pcm_buf_count; /* number of pcm buffer allocated */ | |
100 | /* ---- End of Host PCM section */ | |
101 | ||
102 | struct msm_adsp_module *audplay; | |
103 | ||
104 | /* configuration to use on next enable */ | |
105 | uint32_t out_sample_rate; | |
106 | uint32_t out_channel_mode; | |
107 | struct msm_audio_aac_config aac_config; | |
108 | struct audmgr audmgr; | |
109 | ||
110 | /* data allocated for various buffers */ | |
111 | char *data; | |
112 | dma_addr_t phys; | |
113 | ||
114 | int rflush; /* Read flush */ | |
115 | int wflush; /* Write flush */ | |
116 | int opened; | |
117 | int enabled; | |
118 | int running; | |
119 | int stopped; /* set when stopped, cleared on flush */ | |
120 | int pcm_feedback; | |
121 | int buf_refresh; | |
122 | ||
123 | int reserved; /* A byte is being reserved */ | |
124 | char rsv_byte; /* Handle odd length user data */ | |
125 | ||
126 | unsigned volume; | |
127 | ||
128 | uint16_t dec_id; | |
129 | uint32_t read_ptr_offset; | |
130 | }; | |
131 | ||
132 | static int auddec_dsp_config(struct audio *audio, int enable); | |
133 | static void audpp_cmd_cfg_adec_params(struct audio *audio); | |
134 | static void audpp_cmd_cfg_routing_mode(struct audio *audio); | |
135 | static void audplay_send_data(struct audio *audio, unsigned needed); | |
136 | static void audplay_config_hostpcm(struct audio *audio); | |
137 | static void audplay_buffer_refresh(struct audio *audio); | |
138 | static void audio_dsp_event(void *private, unsigned id, uint16_t *msg); | |
139 | ||
140 | /* must be called with audio->lock held */ | |
141 | static int audio_enable(struct audio *audio) | |
142 | { | |
143 | struct audmgr_config cfg; | |
144 | int rc; | |
145 | ||
146 | dprintk("audio_enable()\n"); | |
147 | ||
148 | if (audio->enabled) | |
149 | return 0; | |
150 | ||
151 | audio->out_tail = 0; | |
152 | audio->out_needed = 0; | |
153 | ||
154 | cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE; | |
155 | cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000; | |
156 | cfg.def_method = RPC_AUD_DEF_METHOD_PLAYBACK; | |
157 | cfg.codec = RPC_AUD_DEF_CODEC_AAC; | |
158 | cfg.snd_method = RPC_SND_METHOD_MIDI; | |
159 | ||
160 | rc = audmgr_enable(&audio->audmgr, &cfg); | |
161 | if (rc < 0) | |
162 | return rc; | |
163 | ||
164 | if (msm_adsp_enable(audio->audplay)) { | |
165 | pr_err("audio: msm_adsp_enable(audplay) failed\n"); | |
166 | audmgr_disable(&audio->audmgr); | |
167 | return -ENODEV; | |
168 | } | |
169 | ||
170 | if (audpp_enable(audio->dec_id, audio_dsp_event, audio)) { | |
171 | pr_err("audio: audpp_enable() failed\n"); | |
172 | msm_adsp_disable(audio->audplay); | |
173 | audmgr_disable(&audio->audmgr); | |
174 | return -ENODEV; | |
175 | } | |
176 | audio->enabled = 1; | |
177 | return 0; | |
178 | } | |
179 | ||
180 | /* must be called with audio->lock held */ | |
181 | static int audio_disable(struct audio *audio) | |
182 | { | |
183 | dprintk("audio_disable()\n"); | |
184 | if (audio->enabled) { | |
185 | audio->enabled = 0; | |
186 | auddec_dsp_config(audio, 0); | |
187 | wake_up(&audio->write_wait); | |
188 | wake_up(&audio->read_wait); | |
189 | msm_adsp_disable(audio->audplay); | |
190 | audpp_disable(audio->dec_id, audio); | |
191 | audmgr_disable(&audio->audmgr); | |
192 | audio->out_needed = 0; | |
193 | } | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* ------------------- dsp --------------------- */ | |
198 | static void audio_update_pcm_buf_entry(struct audio *audio, uint32_t *payload) | |
199 | { | |
200 | uint8_t index; | |
201 | unsigned long flags; | |
202 | ||
203 | if (audio->rflush) | |
204 | return; | |
205 | ||
206 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
207 | for (index = 0; index < payload[1]; index++) { | |
208 | if (audio->in[audio->fill_next].addr == | |
209 | payload[2 + index * 2]) { | |
210 | dprintk("audio_update_pcm_buf_entry: in[%d] ready\n", | |
211 | audio->fill_next); | |
212 | audio->in[audio->fill_next].used = | |
213 | payload[3 + index * 2]; | |
214 | if ((++audio->fill_next) == audio->pcm_buf_count) | |
215 | audio->fill_next = 0; | |
216 | ||
217 | } else { | |
218 | pr_err | |
219 | ("audio_update_pcm_buf_entry: expected=%x ret=%x\n" | |
220 | , audio->in[audio->fill_next].addr, | |
221 | payload[1 + index * 2]); | |
222 | break; | |
223 | } | |
224 | } | |
225 | if (audio->in[audio->fill_next].used == 0) { | |
226 | audplay_buffer_refresh(audio); | |
227 | } else { | |
228 | dprintk("audio_update_pcm_buf_entry: read cannot keep up\n"); | |
229 | audio->buf_refresh = 1; | |
230 | } | |
231 | wake_up(&audio->read_wait); | |
232 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
233 | ||
234 | } | |
235 | ||
236 | static void audplay_dsp_event(void *data, unsigned id, size_t len, | |
237 | void (*getevent) (void *ptr, size_t len)) | |
238 | { | |
239 | struct audio *audio = data; | |
240 | uint32_t msg[28]; | |
241 | getevent(msg, sizeof(msg)); | |
242 | ||
243 | dprintk("audplay_dsp_event: msg_id=%x\n", id); | |
244 | ||
245 | switch (id) { | |
246 | case AUDPLAY_MSG_DEC_NEEDS_DATA: | |
247 | audplay_send_data(audio, 1); | |
248 | break; | |
249 | ||
250 | case AUDPLAY_MSG_BUFFER_UPDATE: | |
251 | audio_update_pcm_buf_entry(audio, msg); | |
252 | break; | |
253 | ||
254 | default: | |
255 | pr_err("unexpected message from decoder \n"); | |
256 | } | |
257 | } | |
258 | ||
259 | static void audio_dsp_event(void *private, unsigned id, uint16_t *msg) | |
260 | { | |
261 | struct audio *audio = private; | |
262 | ||
263 | switch (id) { | |
264 | case AUDPP_MSG_STATUS_MSG:{ | |
265 | unsigned status = msg[1]; | |
266 | ||
267 | switch (status) { | |
268 | case AUDPP_DEC_STATUS_SLEEP: | |
269 | dprintk("decoder status: sleep \n"); | |
270 | break; | |
271 | ||
272 | case AUDPP_DEC_STATUS_INIT: | |
273 | dprintk("decoder status: init \n"); | |
274 | audpp_cmd_cfg_routing_mode(audio); | |
275 | break; | |
276 | ||
277 | case AUDPP_DEC_STATUS_CFG: | |
278 | dprintk("decoder status: cfg \n"); | |
279 | break; | |
280 | case AUDPP_DEC_STATUS_PLAY: | |
281 | dprintk("decoder status: play \n"); | |
282 | if (audio->pcm_feedback) { | |
283 | audplay_config_hostpcm(audio); | |
284 | audplay_buffer_refresh(audio); | |
285 | } | |
286 | break; | |
287 | default: | |
288 | pr_err("unknown decoder status \n"); | |
289 | } | |
290 | break; | |
291 | } | |
292 | case AUDPP_MSG_CFG_MSG: | |
293 | if (msg[0] == AUDPP_MSG_ENA_ENA) { | |
294 | dprintk("audio_dsp_event: CFG_MSG ENABLE\n"); | |
295 | auddec_dsp_config(audio, 1); | |
296 | audio->out_needed = 0; | |
297 | audio->running = 1; | |
298 | audpp_set_volume_and_pan(audio->dec_id, audio->volume, | |
299 | 0); | |
300 | audpp_avsync(audio->dec_id, 22050); | |
301 | } else if (msg[0] == AUDPP_MSG_ENA_DIS) { | |
302 | dprintk("audio_dsp_event: CFG_MSG DISABLE\n"); | |
303 | audpp_avsync(audio->dec_id, 0); | |
304 | audio->running = 0; | |
305 | } else { | |
306 | pr_err("audio_dsp_event: CFG_MSG %d?\n", msg[0]); | |
307 | } | |
308 | break; | |
309 | case AUDPP_MSG_ROUTING_ACK: | |
310 | dprintk("audio_dsp_event: ROUTING_ACK mode=%d\n", msg[1]); | |
311 | audpp_cmd_cfg_adec_params(audio); | |
312 | break; | |
313 | ||
314 | case AUDPP_MSG_FLUSH_ACK: | |
315 | dprintk("%s: FLUSH_ACK\n", __func__); | |
316 | audio->wflush = 0; | |
317 | audio->rflush = 0; | |
318 | if (audio->pcm_feedback) | |
319 | audplay_buffer_refresh(audio); | |
320 | break; | |
321 | ||
322 | default: | |
323 | pr_err("audio_dsp_event: UNKNOWN (%d)\n", id); | |
324 | } | |
325 | ||
326 | } | |
327 | ||
328 | struct msm_adsp_ops audplay_adsp_ops_aac = { | |
329 | .event = audplay_dsp_event, | |
330 | }; | |
331 | ||
332 | #define audplay_send_queue0(audio, cmd, len) \ | |
333 | msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \ | |
334 | cmd, len) | |
335 | ||
336 | static int auddec_dsp_config(struct audio *audio, int enable) | |
337 | { | |
338 | audpp_cmd_cfg_dec_type cmd; | |
339 | ||
340 | memset(&cmd, 0, sizeof(cmd)); | |
341 | cmd.cmd_id = AUDPP_CMD_CFG_DEC_TYPE; | |
342 | if (enable) | |
343 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | | |
344 | AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AAC; | |
345 | else | |
346 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | AUDPP_CMD_DIS_DEC_V; | |
347 | ||
348 | return audpp_send_queue1(&cmd, sizeof(cmd)); | |
349 | } | |
350 | ||
351 | static void audpp_cmd_cfg_adec_params(struct audio *audio) | |
352 | { | |
353 | audpp_cmd_cfg_adec_params_aac cmd; | |
354 | ||
355 | memset(&cmd, 0, sizeof(cmd)); | |
356 | cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS; | |
357 | cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_AAC_LEN; | |
358 | cmd.common.dec_id = audio->dec_id; | |
359 | cmd.common.input_sampling_frequency = audio->out_sample_rate; | |
360 | cmd.format = audio->aac_config.format; | |
361 | cmd.audio_object = audio->aac_config.audio_object; | |
362 | cmd.ep_config = audio->aac_config.ep_config; | |
363 | cmd.aac_section_data_resilience_flag = | |
364 | audio->aac_config.aac_section_data_resilience_flag; | |
365 | cmd.aac_scalefactor_data_resilience_flag = | |
366 | audio->aac_config.aac_scalefactor_data_resilience_flag; | |
367 | cmd.aac_spectral_data_resilience_flag = | |
368 | audio->aac_config.aac_spectral_data_resilience_flag; | |
369 | cmd.sbr_on_flag = audio->aac_config.sbr_on_flag; | |
370 | cmd.sbr_ps_on_flag = audio->aac_config.sbr_ps_on_flag; | |
371 | cmd.channel_configuration = audio->aac_config.channel_configuration; | |
372 | ||
373 | audpp_send_queue2(&cmd, sizeof(cmd)); | |
374 | } | |
375 | ||
376 | static void audpp_cmd_cfg_routing_mode(struct audio *audio) | |
377 | { | |
378 | struct audpp_cmd_routing_mode cmd; | |
379 | dprintk("audpp_cmd_cfg_routing_mode()\n"); | |
380 | memset(&cmd, 0, sizeof(cmd)); | |
381 | cmd.cmd_id = AUDPP_CMD_ROUTING_MODE; | |
382 | cmd.object_number = audio->dec_id; | |
383 | if (audio->pcm_feedback) | |
384 | cmd.routing_mode = ROUTING_MODE_FTRT; | |
385 | else | |
386 | cmd.routing_mode = ROUTING_MODE_RT; | |
387 | ||
388 | audpp_send_queue1(&cmd, sizeof(cmd)); | |
389 | } | |
390 | ||
391 | static int audplay_dsp_send_data_avail(struct audio *audio, | |
392 | unsigned idx, unsigned len) | |
393 | { | |
394 | audplay_cmd_bitstream_data_avail cmd; | |
395 | ||
396 | cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL; | |
397 | cmd.decoder_id = audio->dec_id; | |
398 | cmd.buf_ptr = audio->out[idx].addr; | |
399 | cmd.buf_size = len / 2; | |
400 | cmd.partition_number = 0; | |
401 | return audplay_send_queue0(audio, &cmd, sizeof(cmd)); | |
402 | } | |
403 | ||
404 | static void audplay_buffer_refresh(struct audio *audio) | |
405 | { | |
406 | struct audplay_cmd_buffer_refresh refresh_cmd; | |
407 | ||
408 | refresh_cmd.cmd_id = AUDPLAY_CMD_BUFFER_REFRESH; | |
409 | refresh_cmd.num_buffers = 1; | |
410 | refresh_cmd.buf0_address = audio->in[audio->fill_next].addr; | |
411 | refresh_cmd.buf0_length = audio->in[audio->fill_next].size - | |
412 | (audio->in[audio->fill_next].size % 1024); /* AAC frame size */ | |
413 | refresh_cmd.buf_read_count = 0; | |
414 | dprintk("audplay_buffer_fresh: buf0_addr=%x buf0_len=%d\n", | |
415 | refresh_cmd.buf0_address, refresh_cmd.buf0_length); | |
416 | (void)audplay_send_queue0(audio, &refresh_cmd, sizeof(refresh_cmd)); | |
417 | } | |
418 | ||
419 | static void audplay_config_hostpcm(struct audio *audio) | |
420 | { | |
421 | struct audplay_cmd_hpcm_buf_cfg cfg_cmd; | |
422 | ||
423 | dprintk("audplay_config_hostpcm()\n"); | |
424 | cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG; | |
425 | cfg_cmd.max_buffers = audio->pcm_buf_count; | |
426 | cfg_cmd.byte_swap = 0; | |
427 | cfg_cmd.hostpcm_config = (0x8000) | (0x4000); | |
428 | cfg_cmd.feedback_frequency = 1; | |
429 | cfg_cmd.partition_number = 0; | |
430 | (void)audplay_send_queue0(audio, &cfg_cmd, sizeof(cfg_cmd)); | |
431 | ||
432 | } | |
433 | ||
434 | static void audplay_send_data(struct audio *audio, unsigned needed) | |
435 | { | |
436 | struct buffer *frame; | |
437 | unsigned long flags; | |
438 | ||
439 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
440 | if (!audio->running) | |
441 | goto done; | |
442 | ||
443 | if (needed && !audio->wflush) { | |
444 | /* We were called from the callback because the DSP | |
445 | * requested more data. Note that the DSP does want | |
446 | * more data, and if a buffer was in-flight, mark it | |
447 | * as available (since the DSP must now be done with | |
448 | * it). | |
449 | */ | |
450 | audio->out_needed = 1; | |
451 | frame = audio->out + audio->out_tail; | |
452 | if (frame->used == 0xffffffff) { | |
453 | dprintk("frame %d free\n", audio->out_tail); | |
454 | frame->used = 0; | |
455 | audio->out_tail ^= 1; | |
456 | wake_up(&audio->write_wait); | |
457 | } | |
458 | } | |
459 | ||
460 | if (audio->out_needed) { | |
461 | /* If the DSP currently wants data and we have a | |
462 | * buffer available, we will send it and reset | |
463 | * the needed flag. We'll mark the buffer as in-flight | |
464 | * so that it won't be recycled until the next buffer | |
465 | * is requested | |
466 | */ | |
467 | ||
468 | frame = audio->out + audio->out_tail; | |
469 | if (frame->used) { | |
470 | BUG_ON(frame->used == 0xffffffff); | |
471 | /* printk("frame %d busy\n", audio->out_tail); */ | |
472 | audplay_dsp_send_data_avail(audio, audio->out_tail, | |
473 | frame->used); | |
474 | frame->used = 0xffffffff; | |
475 | audio->out_needed = 0; | |
476 | } | |
477 | } | |
478 | done: | |
479 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
480 | } | |
481 | ||
482 | /* ------------------- device --------------------- */ | |
483 | ||
484 | static void audio_flush(struct audio *audio) | |
485 | { | |
486 | audio->out[0].used = 0; | |
487 | audio->out[1].used = 0; | |
488 | audio->out_head = 0; | |
489 | audio->out_tail = 0; | |
490 | audio->reserved = 0; | |
491 | audio->out_needed = 0; | |
492 | atomic_set(&audio->out_bytes, 0); | |
493 | } | |
494 | ||
495 | static void audio_flush_pcm_buf(struct audio *audio) | |
496 | { | |
497 | uint8_t index; | |
498 | ||
499 | for (index = 0; index < PCM_BUF_MAX_COUNT; index++) | |
500 | audio->in[index].used = 0; | |
501 | audio->buf_refresh = 0; | |
502 | audio->read_next = 0; | |
503 | audio->fill_next = 0; | |
504 | } | |
505 | ||
506 | static int audaac_validate_usr_config(struct msm_audio_aac_config *config) | |
507 | { | |
508 | int ret_val = -1; | |
509 | ||
510 | if (config->format != AUDIO_AAC_FORMAT_ADTS && | |
511 | config->format != AUDIO_AAC_FORMAT_RAW && | |
512 | config->format != AUDIO_AAC_FORMAT_PSUEDO_RAW && | |
513 | config->format != AUDIO_AAC_FORMAT_LOAS) | |
514 | goto done; | |
515 | ||
516 | if (config->audio_object != AUDIO_AAC_OBJECT_LC && | |
517 | config->audio_object != AUDIO_AAC_OBJECT_LTP && | |
518 | config->audio_object != AUDIO_AAC_OBJECT_ERLC) | |
519 | goto done; | |
520 | ||
521 | if (config->audio_object == AUDIO_AAC_OBJECT_ERLC) { | |
522 | if (config->ep_config > 3) | |
523 | goto done; | |
524 | if (config->aac_scalefactor_data_resilience_flag != | |
525 | AUDIO_AAC_SCA_DATA_RES_OFF && | |
526 | config->aac_scalefactor_data_resilience_flag != | |
527 | AUDIO_AAC_SCA_DATA_RES_ON) | |
528 | goto done; | |
529 | if (config->aac_section_data_resilience_flag != | |
530 | AUDIO_AAC_SEC_DATA_RES_OFF && | |
531 | config->aac_section_data_resilience_flag != | |
532 | AUDIO_AAC_SEC_DATA_RES_ON) | |
533 | goto done; | |
534 | if (config->aac_spectral_data_resilience_flag != | |
535 | AUDIO_AAC_SPEC_DATA_RES_OFF && | |
536 | config->aac_spectral_data_resilience_flag != | |
537 | AUDIO_AAC_SPEC_DATA_RES_ON) | |
538 | goto done; | |
539 | } else { | |
540 | config->aac_section_data_resilience_flag = | |
541 | AUDIO_AAC_SEC_DATA_RES_OFF; | |
542 | config->aac_scalefactor_data_resilience_flag = | |
543 | AUDIO_AAC_SCA_DATA_RES_OFF; | |
544 | config->aac_spectral_data_resilience_flag = | |
545 | AUDIO_AAC_SPEC_DATA_RES_OFF; | |
546 | } | |
547 | ||
548 | if (config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_OFF && | |
549 | config->sbr_on_flag != AUDIO_AAC_SBR_ON_FLAG_ON) | |
550 | goto done; | |
551 | ||
552 | if (config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_OFF && | |
553 | config->sbr_ps_on_flag != AUDIO_AAC_SBR_PS_ON_FLAG_ON) | |
554 | goto done; | |
555 | ||
556 | if (config->dual_mono_mode > AUDIO_AAC_DUAL_MONO_PL_SR) | |
557 | goto done; | |
558 | ||
559 | if (config->channel_configuration > 2) | |
560 | goto done; | |
561 | ||
562 | ret_val = 0; | |
563 | done: | |
564 | return ret_val; | |
565 | } | |
566 | ||
567 | static void audio_ioport_reset(struct audio *audio) | |
568 | { | |
569 | /* Make sure read/write thread are free from | |
570 | * sleep and knowing that system is not able | |
571 | * to process io request at the moment | |
572 | */ | |
573 | wake_up(&audio->write_wait); | |
574 | mutex_lock(&audio->write_lock); | |
575 | audio_flush(audio); | |
576 | mutex_unlock(&audio->write_lock); | |
577 | wake_up(&audio->read_wait); | |
578 | mutex_lock(&audio->read_lock); | |
579 | audio_flush_pcm_buf(audio); | |
580 | mutex_unlock(&audio->read_lock); | |
581 | } | |
582 | ||
583 | static long audio_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
584 | { | |
585 | struct audio *audio = file->private_data; | |
586 | int rc = 0; | |
587 | ||
588 | dprintk("audio_ioctl() cmd = %d\n", cmd); | |
589 | ||
590 | if (cmd == AUDIO_GET_STATS) { | |
591 | struct msm_audio_stats stats; | |
592 | stats.byte_count = audpp_avsync_byte_count(audio->dec_id); | |
593 | stats.sample_count = audpp_avsync_sample_count(audio->dec_id); | |
594 | if (copy_to_user((void *)arg, &stats, sizeof(stats))) | |
595 | return -EFAULT; | |
596 | return 0; | |
597 | } | |
598 | if (cmd == AUDIO_SET_VOLUME) { | |
599 | unsigned long flags; | |
600 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
601 | audio->volume = arg; | |
602 | if (audio->running) | |
603 | audpp_set_volume_and_pan(audio->dec_id, arg, 0); | |
604 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
605 | return 0; | |
606 | } | |
607 | mutex_lock(&audio->lock); | |
608 | switch (cmd) { | |
609 | case AUDIO_START: | |
610 | rc = audio_enable(audio); | |
611 | break; | |
612 | case AUDIO_STOP: | |
613 | rc = audio_disable(audio); | |
614 | audio->stopped = 1; | |
615 | audio_ioport_reset(audio); | |
616 | audio->stopped = 0; | |
617 | break; | |
618 | case AUDIO_FLUSH: | |
619 | dprintk("%s: AUDIO_FLUSH\n", __func__); | |
620 | audio->rflush = 1; | |
621 | audio->wflush = 1; | |
622 | audio_ioport_reset(audio); | |
623 | if (audio->running) | |
624 | audpp_flush(audio->dec_id); | |
625 | else { | |
626 | audio->rflush = 0; | |
627 | audio->wflush = 0; | |
628 | } | |
629 | break; | |
630 | ||
631 | case AUDIO_SET_CONFIG:{ | |
632 | struct msm_audio_config config; | |
633 | ||
634 | if (copy_from_user | |
635 | (&config, (void *)arg, sizeof(config))) { | |
636 | rc = -EFAULT; | |
637 | break; | |
638 | } | |
639 | ||
640 | if (config.channel_count == 1) { | |
641 | config.channel_count = | |
642 | AUDPP_CMD_PCM_INTF_MONO_V; | |
643 | } else if (config.channel_count == 2) { | |
644 | config.channel_count = | |
645 | AUDPP_CMD_PCM_INTF_STEREO_V; | |
646 | } else { | |
647 | rc = -EINVAL; | |
648 | break; | |
649 | } | |
650 | ||
651 | audio->out_sample_rate = config.sample_rate; | |
652 | audio->out_channel_mode = config.channel_count; | |
653 | rc = 0; | |
654 | break; | |
655 | } | |
656 | case AUDIO_GET_CONFIG:{ | |
657 | struct msm_audio_config config; | |
658 | config.buffer_size = BUFSZ; | |
659 | config.buffer_count = 2; | |
660 | config.sample_rate = audio->out_sample_rate; | |
661 | if (audio->out_channel_mode == | |
662 | AUDPP_CMD_PCM_INTF_MONO_V) { | |
663 | config.channel_count = 1; | |
664 | } else { | |
665 | config.channel_count = 2; | |
666 | } | |
667 | config.unused[0] = 0; | |
668 | config.unused[1] = 0; | |
669 | config.unused[2] = 0; | |
670 | config.unused[3] = 0; | |
671 | if (copy_to_user((void *)arg, &config, | |
672 | sizeof(config))) | |
673 | rc = -EFAULT; | |
674 | else | |
675 | rc = 0; | |
676 | ||
677 | break; | |
678 | } | |
679 | case AUDIO_GET_AAC_CONFIG:{ | |
680 | if (copy_to_user((void *)arg, &audio->aac_config, | |
681 | sizeof(audio->aac_config))) | |
682 | rc = -EFAULT; | |
683 | else | |
684 | rc = 0; | |
685 | break; | |
686 | } | |
687 | case AUDIO_SET_AAC_CONFIG:{ | |
688 | struct msm_audio_aac_config usr_config; | |
689 | ||
690 | if (copy_from_user | |
691 | (&usr_config, (void *)arg, | |
692 | sizeof(usr_config))) { | |
693 | rc = -EFAULT; | |
694 | break; | |
695 | } | |
696 | ||
697 | if (audaac_validate_usr_config(&usr_config) == 0) { | |
698 | audio->aac_config = usr_config; | |
699 | rc = 0; | |
700 | } else | |
701 | rc = -EINVAL; | |
702 | ||
703 | break; | |
704 | } | |
705 | case AUDIO_GET_PCM_CONFIG:{ | |
706 | struct msm_audio_pcm_config config; | |
707 | config.pcm_feedback = 0; | |
708 | config.buffer_count = PCM_BUF_MAX_COUNT; | |
709 | config.buffer_size = PCM_BUFSZ_MIN; | |
710 | if (copy_to_user((void *)arg, &config, | |
711 | sizeof(config))) | |
712 | rc = -EFAULT; | |
713 | else | |
714 | rc = 0; | |
715 | break; | |
716 | } | |
717 | case AUDIO_SET_PCM_CONFIG:{ | |
718 | struct msm_audio_pcm_config config; | |
719 | if (copy_from_user | |
720 | (&config, (void *)arg, sizeof(config))) { | |
721 | rc = -EFAULT; | |
722 | break; | |
723 | } | |
724 | if ((config.buffer_count > PCM_BUF_MAX_COUNT) || | |
725 | (config.buffer_count == 1)) | |
726 | config.buffer_count = PCM_BUF_MAX_COUNT; | |
727 | ||
728 | if (config.buffer_size < PCM_BUFSZ_MIN) | |
729 | config.buffer_size = PCM_BUFSZ_MIN; | |
730 | ||
731 | /* Check if pcm feedback is required */ | |
732 | if ((config.pcm_feedback) && (!audio->read_data)) { | |
733 | dprintk("ioctl: allocate PCM buffer %d\n", | |
734 | config.buffer_count * | |
735 | config.buffer_size); | |
736 | audio->read_data = | |
737 | dma_alloc_coherent(NULL, | |
738 | config.buffer_size * | |
739 | config.buffer_count, | |
740 | &audio->read_phys, | |
741 | GFP_KERNEL); | |
742 | if (!audio->read_data) { | |
743 | pr_err("audio_aac: buf alloc fail\n"); | |
744 | rc = -1; | |
745 | } else { | |
746 | uint8_t index; | |
747 | uint32_t offset = 0; | |
748 | audio->pcm_feedback = 1; | |
749 | audio->buf_refresh = 0; | |
750 | audio->pcm_buf_count = | |
751 | config.buffer_count; | |
752 | audio->read_next = 0; | |
753 | audio->fill_next = 0; | |
754 | ||
755 | for (index = 0; | |
756 | index < config.buffer_count; | |
757 | index++) { | |
758 | audio->in[index].data = | |
759 | audio->read_data + offset; | |
760 | audio->in[index].addr = | |
761 | audio->read_phys + offset; | |
762 | audio->in[index].size = | |
763 | config.buffer_size; | |
764 | audio->in[index].used = 0; | |
765 | offset += config.buffer_size; | |
766 | } | |
767 | rc = 0; | |
768 | } | |
769 | } else { | |
770 | rc = 0; | |
771 | } | |
772 | break; | |
773 | } | |
774 | case AUDIO_PAUSE: | |
775 | dprintk("%s: AUDIO_PAUSE %ld\n", __func__, arg); | |
776 | rc = audpp_pause(audio->dec_id, (int) arg); | |
777 | break; | |
778 | default: | |
779 | rc = -EINVAL; | |
780 | } | |
781 | mutex_unlock(&audio->lock); | |
782 | return rc; | |
783 | } | |
784 | ||
785 | static ssize_t audio_read(struct file *file, char __user *buf, size_t count, | |
786 | loff_t *pos) | |
787 | { | |
788 | struct audio *audio = file->private_data; | |
789 | const char __user *start = buf; | |
790 | int rc = 0; | |
791 | ||
792 | if (!audio->pcm_feedback) | |
793 | return 0; /* PCM feedback is not enabled. Nothing to read */ | |
794 | ||
795 | mutex_lock(&audio->read_lock); | |
796 | dprintk("audio_read() %d \n", count); | |
797 | while (count > 0) { | |
798 | rc = wait_event_interruptible(audio->read_wait, | |
799 | (audio->in[audio->read_next]. | |
800 | used > 0) || (audio->stopped) | |
801 | || (audio->rflush)); | |
802 | ||
803 | if (rc < 0) | |
804 | break; | |
805 | ||
806 | if (audio->stopped || audio->rflush) { | |
807 | rc = -EBUSY; | |
808 | break; | |
809 | } | |
810 | ||
811 | if (count < audio->in[audio->read_next].used) { | |
812 | /* Read must happen in frame boundary. Since driver | |
813 | does not know frame size, read count must be greater | |
814 | or equal to size of PCM samples */ | |
815 | dprintk("audio_read: no partial frame done reading\n"); | |
816 | break; | |
817 | } else { | |
818 | dprintk("audio_read: read from in[%d]\n", | |
819 | audio->read_next); | |
820 | if (copy_to_user | |
821 | (buf, audio->in[audio->read_next].data, | |
822 | audio->in[audio->read_next].used)) { | |
823 | pr_err("audio_read: invalid addr %x \n", | |
824 | (unsigned int)buf); | |
825 | rc = -EFAULT; | |
826 | break; | |
827 | } | |
828 | count -= audio->in[audio->read_next].used; | |
829 | buf += audio->in[audio->read_next].used; | |
830 | audio->in[audio->read_next].used = 0; | |
831 | if ((++audio->read_next) == audio->pcm_buf_count) | |
832 | audio->read_next = 0; | |
833 | if (audio->in[audio->read_next].used == 0) | |
834 | break; /* No data ready at this moment | |
835 | * Exit while loop to prevent | |
836 | * output thread sleep too long | |
837 | */ | |
838 | } | |
839 | } | |
840 | ||
841 | /* don't feed output buffer to HW decoder during flushing | |
842 | * buffer refresh command will be sent once flush completes | |
843 | * send buf refresh command here can confuse HW decoder | |
844 | */ | |
845 | if (audio->buf_refresh && !audio->rflush) { | |
846 | audio->buf_refresh = 0; | |
847 | dprintk("audio_read: kick start pcm feedback again\n"); | |
848 | audplay_buffer_refresh(audio); | |
849 | } | |
850 | ||
851 | mutex_unlock(&audio->read_lock); | |
852 | ||
853 | if (buf > start) | |
854 | rc = buf - start; | |
855 | ||
856 | dprintk("audio_read: read %d bytes\n", rc); | |
857 | return rc; | |
858 | } | |
859 | ||
860 | static ssize_t audio_write(struct file *file, const char __user *buf, | |
861 | size_t count, loff_t *pos) | |
862 | { | |
863 | struct audio *audio = file->private_data; | |
864 | const char __user *start = buf; | |
865 | struct buffer *frame; | |
866 | size_t xfer; | |
867 | char *cpy_ptr; | |
868 | int rc = 0; | |
869 | unsigned dsize; | |
870 | ||
871 | mutex_lock(&audio->write_lock); | |
872 | while (count > 0) { | |
873 | frame = audio->out + audio->out_head; | |
874 | cpy_ptr = frame->data; | |
875 | dsize = 0; | |
876 | rc = wait_event_interruptible(audio->write_wait, | |
877 | (frame->used == 0) | |
878 | || (audio->stopped) | |
879 | || (audio->wflush)); | |
880 | if (rc < 0) | |
881 | break; | |
882 | if (audio->stopped || audio->wflush) { | |
883 | rc = -EBUSY; | |
884 | break; | |
885 | } | |
886 | ||
887 | if (audio->reserved) { | |
888 | dprintk("%s: append reserved byte %x\n", | |
889 | __func__, audio->rsv_byte); | |
890 | *cpy_ptr = audio->rsv_byte; | |
891 | xfer = (count > (frame->size - 1)) ? | |
892 | frame->size - 1 : count; | |
893 | cpy_ptr++; | |
894 | dsize = 1; | |
895 | audio->reserved = 0; | |
896 | } else | |
897 | xfer = (count > frame->size) ? frame->size : count; | |
898 | ||
899 | if (copy_from_user(cpy_ptr, buf, xfer)) { | |
900 | rc = -EFAULT; | |
901 | break; | |
902 | } | |
903 | ||
904 | dsize += xfer; | |
905 | if (dsize & 1) { | |
906 | audio->rsv_byte = ((char *) frame->data)[dsize - 1]; | |
907 | dprintk("%s: odd length buf reserve last byte %x\n", | |
908 | __func__, audio->rsv_byte); | |
909 | audio->reserved = 1; | |
910 | dsize--; | |
911 | } | |
912 | count -= xfer; | |
913 | buf += xfer; | |
914 | ||
915 | if (dsize > 0) { | |
916 | audio->out_head ^= 1; | |
917 | frame->used = dsize; | |
918 | audplay_send_data(audio, 0); | |
919 | } | |
920 | } | |
921 | mutex_unlock(&audio->write_lock); | |
922 | if (buf > start) | |
923 | return buf - start; | |
924 | return rc; | |
925 | } | |
926 | ||
927 | static int audio_release(struct inode *inode, struct file *file) | |
928 | { | |
929 | struct audio *audio = file->private_data; | |
930 | ||
931 | dprintk("audio_release()\n"); | |
932 | ||
933 | mutex_lock(&audio->lock); | |
934 | audio_disable(audio); | |
935 | audio_flush(audio); | |
936 | audio_flush_pcm_buf(audio); | |
937 | msm_adsp_put(audio->audplay); | |
938 | audio->audplay = NULL; | |
939 | audio->opened = 0; | |
940 | audio->reserved = 0; | |
941 | dma_free_coherent(NULL, DMASZ, audio->data, audio->phys); | |
942 | audio->data = NULL; | |
943 | if (audio->read_data != NULL) { | |
944 | dma_free_coherent(NULL, | |
945 | audio->in[0].size * audio->pcm_buf_count, | |
946 | audio->read_data, audio->read_phys); | |
947 | audio->read_data = NULL; | |
948 | } | |
949 | audio->pcm_feedback = 0; | |
950 | mutex_unlock(&audio->lock); | |
951 | return 0; | |
952 | } | |
953 | ||
a5ca2dfc | 954 | static struct audio the_aac_audio; |
caff4cae IM |
955 | |
956 | static int audio_open(struct inode *inode, struct file *file) | |
957 | { | |
958 | struct audio *audio = &the_aac_audio; | |
959 | int rc; | |
960 | ||
961 | mutex_lock(&audio->lock); | |
962 | ||
963 | if (audio->opened) { | |
964 | pr_err("audio: busy\n"); | |
965 | rc = -EBUSY; | |
966 | goto done; | |
967 | } | |
968 | ||
969 | if (!audio->data) { | |
970 | audio->data = dma_alloc_coherent(NULL, DMASZ, | |
971 | &audio->phys, GFP_KERNEL); | |
972 | if (!audio->data) { | |
973 | pr_err("audio: could not allocate DMA buffers\n"); | |
974 | rc = -ENOMEM; | |
975 | goto done; | |
976 | } | |
977 | } | |
978 | ||
979 | rc = audmgr_open(&audio->audmgr); | |
980 | if (rc) | |
981 | goto done; | |
982 | ||
983 | rc = msm_adsp_get("AUDPLAY0TASK", &audio->audplay, | |
984 | &audplay_adsp_ops_aac, audio); | |
985 | if (rc) { | |
986 | pr_err("audio: failed to get audplay0 dsp module\n"); | |
987 | goto done; | |
988 | } | |
989 | audio->out_sample_rate = 44100; | |
990 | audio->out_channel_mode = AUDPP_CMD_PCM_INTF_STEREO_V; | |
991 | audio->aac_config.format = AUDIO_AAC_FORMAT_ADTS; | |
992 | audio->aac_config.audio_object = AUDIO_AAC_OBJECT_LC; | |
993 | audio->aac_config.ep_config = 0; | |
994 | audio->aac_config.aac_section_data_resilience_flag = | |
995 | AUDIO_AAC_SEC_DATA_RES_OFF; | |
996 | audio->aac_config.aac_scalefactor_data_resilience_flag = | |
997 | AUDIO_AAC_SCA_DATA_RES_OFF; | |
998 | audio->aac_config.aac_spectral_data_resilience_flag = | |
999 | AUDIO_AAC_SPEC_DATA_RES_OFF; | |
1000 | audio->aac_config.sbr_on_flag = AUDIO_AAC_SBR_ON_FLAG_ON; | |
1001 | audio->aac_config.sbr_ps_on_flag = AUDIO_AAC_SBR_PS_ON_FLAG_ON; | |
1002 | audio->aac_config.dual_mono_mode = AUDIO_AAC_DUAL_MONO_PL_SR; | |
1003 | audio->aac_config.channel_configuration = 2; | |
1004 | audio->dec_id = 0; | |
1005 | ||
1006 | audio->out[0].data = audio->data + 0; | |
1007 | audio->out[0].addr = audio->phys + 0; | |
1008 | audio->out[0].size = BUFSZ; | |
1009 | ||
1010 | audio->out[1].data = audio->data + BUFSZ; | |
1011 | audio->out[1].addr = audio->phys + BUFSZ; | |
1012 | audio->out[1].size = BUFSZ; | |
1013 | ||
1014 | audio->volume = 0x2000; /* Q13 1.0 */ | |
1015 | ||
1016 | audio_flush(audio); | |
1017 | ||
1018 | file->private_data = audio; | |
1019 | audio->opened = 1; | |
1020 | rc = 0; | |
1021 | done: | |
1022 | mutex_unlock(&audio->lock); | |
1023 | return rc; | |
1024 | } | |
1025 | ||
1026 | static struct file_operations audio_aac_fops = { | |
1027 | .owner = THIS_MODULE, | |
1028 | .open = audio_open, | |
1029 | .release = audio_release, | |
1030 | .read = audio_read, | |
1031 | .write = audio_write, | |
1032 | .unlocked_ioctl = audio_ioctl, | |
6038f373 | 1033 | .llseek = noop_llseek, |
caff4cae IM |
1034 | }; |
1035 | ||
1036 | struct miscdevice audio_aac_misc = { | |
1037 | .minor = MISC_DYNAMIC_MINOR, | |
1038 | .name = "msm_aac", | |
1039 | .fops = &audio_aac_fops, | |
1040 | }; | |
1041 | ||
1042 | static int __init audio_init(void) | |
1043 | { | |
1044 | mutex_init(&the_aac_audio.lock); | |
1045 | mutex_init(&the_aac_audio.write_lock); | |
1046 | mutex_init(&the_aac_audio.read_lock); | |
1047 | spin_lock_init(&the_aac_audio.dsp_lock); | |
1048 | init_waitqueue_head(&the_aac_audio.write_wait); | |
1049 | init_waitqueue_head(&the_aac_audio.read_wait); | |
1050 | the_aac_audio.read_data = NULL; | |
1051 | return misc_register(&audio_aac_misc); | |
1052 | } | |
1053 | ||
1054 | device_initcall(audio_init); |