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