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1 | /* linux/arch/arm/mach-msm/qdsp5/audio_amrnb.c |
2 | * | |
3 | * amrnb audio decoder device | |
4 | * | |
5 | * Copyright (c) 2008 QUALCOMM USA, INC. | |
6 | * | |
7 | * Based on the mp3 native driver in arch/arm/mach-msm/qdsp5/audio_mp3.c | |
8 | * | |
9 | * Copyright (C) 2008 Google, Inc. | |
10 | * Copyright (C) 2008 HTC Corporation | |
11 | * | |
12 | * All source code in this file is licensed under the following license except | |
13 | * where indicated. | |
14 | * | |
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. | |
18 | * | |
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. | |
22 | * | |
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 | |
26 | */ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/fs.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> | |
5a0e3ad6 | 35 | #include <linux/gfp.h> |
caff4cae IM |
36 | |
37 | #include <linux/delay.h> | |
38 | ||
39 | #include <asm/atomic.h> | |
40 | #include <asm/ioctls.h> | |
41 | #include <mach/msm_adsp.h> | |
42 | #include <linux/msm_audio.h> | |
43 | #include "audmgr.h" | |
44 | ||
45 | #include <mach/qdsp5/qdsp5audppcmdi.h> | |
46 | #include <mach/qdsp5/qdsp5audppmsg.h> | |
47 | #include <mach/qdsp5/qdsp5audplaycmdi.h> | |
48 | #include <mach/qdsp5/qdsp5audplaymsg.h> | |
49 | ||
50 | /* for queue ids - should be relative to module number*/ | |
51 | #include "adsp.h" | |
52 | ||
53 | #define DEBUG | |
54 | #ifdef DEBUG | |
55 | #define dprintk(format, arg...) \ | |
56 | printk(KERN_DEBUG format, ## arg) | |
57 | #else | |
58 | #define dprintk(format, arg...) do {} while (0) | |
59 | #endif | |
60 | ||
61 | #define BUFSZ 1024 /* Hold minimum 700ms voice data */ | |
62 | #define DMASZ (BUFSZ * 2) | |
63 | ||
64 | #define AUDPLAY_INVALID_READ_PTR_OFFSET 0xFFFF | |
65 | #define AUDDEC_DEC_AMRNB 10 | |
66 | ||
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 | |
78 | ||
79 | struct buffer { | |
80 | void *data; | |
81 | unsigned size; | |
82 | unsigned used; /* Input usage actual DSP produced PCM size */ | |
83 | unsigned addr; | |
84 | }; | |
85 | ||
86 | struct audio { | |
87 | struct buffer out[2]; | |
88 | ||
89 | spinlock_t dsp_lock; | |
90 | ||
91 | uint8_t out_head; | |
92 | uint8_t out_tail; | |
93 | uint8_t out_needed; /* number of buffers the dsp is waiting for */ | |
94 | ||
95 | atomic_t out_bytes; | |
96 | ||
97 | struct mutex lock; | |
98 | struct mutex write_lock; | |
99 | wait_queue_head_t write_wait; | |
100 | ||
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 */ | |
111 | ||
112 | struct msm_adsp_module *audplay; | |
113 | ||
114 | struct audmgr audmgr; | |
115 | ||
116 | /* data allocated for various buffers */ | |
117 | char *data; | |
118 | dma_addr_t phys; | |
119 | ||
120 | uint8_t opened:1; | |
121 | uint8_t enabled:1; | |
122 | uint8_t running:1; | |
123 | uint8_t stopped:1; /* set when stopped, cleared on flush */ | |
124 | uint8_t pcm_feedback:1; | |
125 | uint8_t buf_refresh:1; | |
126 | ||
127 | unsigned volume; | |
128 | ||
129 | uint16_t dec_id; | |
130 | uint32_t read_ptr_offset; | |
131 | }; | |
132 | ||
133 | struct audpp_cmd_cfg_adec_params_amrnb { | |
134 | audpp_cmd_cfg_adec_params_common common; | |
135 | unsigned short stereo_cfg; | |
136 | } __attribute__((packed)) ; | |
137 | ||
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); | |
145 | ||
146 | /* must be called with audio->lock held */ | |
147 | static int audamrnb_enable(struct audio *audio) | |
148 | { | |
149 | struct audmgr_config cfg; | |
150 | int rc; | |
151 | ||
152 | dprintk("audamrnb_enable()\n"); | |
153 | ||
154 | if (audio->enabled) | |
155 | return 0; | |
156 | ||
157 | audio->out_tail = 0; | |
158 | audio->out_needed = 0; | |
159 | ||
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; | |
165 | ||
166 | rc = audmgr_enable(&audio->audmgr, &cfg); | |
167 | if (rc < 0) | |
168 | return rc; | |
169 | ||
170 | if (msm_adsp_enable(audio->audplay)) { | |
171 | pr_err("audio: msm_adsp_enable(audplay) failed\n"); | |
172 | audmgr_disable(&audio->audmgr); | |
173 | return -ENODEV; | |
174 | } | |
175 | ||
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); | |
180 | return -ENODEV; | |
181 | } | |
182 | audio->enabled = 1; | |
183 | return 0; | |
184 | } | |
185 | ||
186 | /* must be called with audio->lock held */ | |
187 | static int audamrnb_disable(struct audio *audio) | |
188 | { | |
189 | dprintk("audamrnb_disable()\n"); | |
190 | if (audio->enabled) { | |
191 | audio->enabled = 0; | |
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; | |
199 | } | |
200 | return 0; | |
201 | } | |
202 | ||
203 | /* ------------------- dsp --------------------- */ | |
204 | static void audamrnb_update_pcm_buf_entry(struct audio *audio, | |
205 | uint32_t *payload) | |
206 | { | |
207 | uint8_t index; | |
208 | unsigned long flags; | |
209 | ||
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", | |
215 | audio->fill_next); | |
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; | |
220 | ||
221 | } else { | |
222 | pr_err | |
223 | ("audamrnb_update_pcm_buf_entry: expected=%x ret=%x\n" | |
224 | , audio->in[audio->fill_next].addr, | |
225 | payload[1 + index * 2]); | |
226 | break; | |
227 | } | |
228 | } | |
229 | if (audio->in[audio->fill_next].used == 0) { | |
230 | audamrnb_buffer_refresh(audio); | |
231 | } else { | |
232 | dprintk("audamrnb_update_pcm_buf_entry: read cannot keep up\n"); | |
233 | audio->buf_refresh = 1; | |
234 | } | |
235 | ||
236 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
237 | wake_up(&audio->read_wait); | |
238 | } | |
239 | ||
240 | static void audplay_dsp_event(void *data, unsigned id, size_t len, | |
241 | void (*getevent) (void *ptr, size_t len)) | |
242 | { | |
243 | struct audio *audio = data; | |
244 | uint32_t msg[28]; | |
245 | getevent(msg, sizeof(msg)); | |
246 | ||
247 | dprintk("audplay_dsp_event: msg_id=%x\n", id); | |
248 | ||
249 | switch (id) { | |
250 | case AUDPLAY_MSG_DEC_NEEDS_DATA: | |
251 | audamrnb_send_data(audio, 1); | |
252 | break; | |
253 | ||
254 | case AUDPLAY_MSG_BUFFER_UPDATE: | |
255 | audamrnb_update_pcm_buf_entry(audio, msg); | |
256 | break; | |
257 | ||
258 | default: | |
259 | pr_err("unexpected message from decoder \n"); | |
260 | } | |
261 | } | |
262 | ||
263 | static void audamrnb_dsp_event(void *private, unsigned id, uint16_t *msg) | |
264 | { | |
265 | struct audio *audio = private; | |
266 | ||
267 | switch (id) { | |
268 | case AUDPP_MSG_STATUS_MSG:{ | |
269 | unsigned status = msg[1]; | |
270 | ||
271 | switch (status) { | |
272 | case AUDPP_DEC_STATUS_SLEEP: | |
273 | dprintk("decoder status: sleep \n"); | |
274 | break; | |
275 | ||
276 | case AUDPP_DEC_STATUS_INIT: | |
277 | dprintk("decoder status: init \n"); | |
278 | audpp_cmd_cfg_routing_mode(audio); | |
279 | break; | |
280 | ||
281 | case AUDPP_DEC_STATUS_CFG: | |
282 | dprintk("decoder status: cfg \n"); | |
283 | break; | |
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); | |
289 | } | |
290 | break; | |
291 | default: | |
292 | pr_err("unknown decoder status \n"); | |
293 | break; | |
294 | } | |
295 | break; | |
296 | } | |
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; | |
302 | audio->running = 1; | |
303 | audpp_set_volume_and_pan(audio->dec_id, audio->volume, | |
304 | 0); | |
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); | |
309 | audio->running = 0; | |
310 | } else { | |
311 | pr_err("audamrnb_dsp_event: CFG_MSG %d?\n", msg[0]); | |
312 | } | |
313 | break; | |
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); | |
317 | break; | |
318 | ||
319 | default: | |
320 | pr_err("audamrnb_dsp_event: UNKNOWN (%d)\n", id); | |
321 | } | |
322 | ||
323 | } | |
324 | ||
325 | struct msm_adsp_ops audplay_adsp_ops_amrnb = { | |
326 | .event = audplay_dsp_event, | |
327 | }; | |
328 | ||
329 | #define audplay_send_queue0(audio, cmd, len) \ | |
330 | msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \ | |
331 | cmd, len) | |
332 | ||
333 | static int auddec_dsp_config(struct audio *audio, int enable) | |
334 | { | |
335 | audpp_cmd_cfg_dec_type cmd; | |
336 | ||
337 | memset(&cmd, 0, sizeof(cmd)); | |
338 | cmd.cmd_id = AUDPP_CMD_CFG_DEC_TYPE; | |
339 | if (enable) | |
340 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | | |
341 | AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_AMRNB; | |
342 | else | |
343 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | AUDPP_CMD_DIS_DEC_V; | |
344 | ||
345 | return audpp_send_queue1(&cmd, sizeof(cmd)); | |
346 | } | |
347 | ||
348 | static void audpp_cmd_cfg_adec_params(struct audio *audio) | |
349 | { | |
350 | struct audpp_cmd_cfg_adec_params_amrnb cmd; | |
351 | ||
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; | |
358 | ||
359 | audpp_send_queue2(&cmd, sizeof(cmd)); | |
360 | } | |
361 | ||
362 | static void audpp_cmd_cfg_routing_mode(struct audio *audio) | |
363 | { | |
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; | |
371 | else | |
372 | cmd.routing_mode = ROUTING_MODE_RT; | |
373 | ||
374 | audpp_send_queue1(&cmd, sizeof(cmd)); | |
375 | } | |
376 | ||
377 | static int audplay_dsp_send_data_avail(struct audio *audio, | |
378 | unsigned idx, unsigned len) | |
379 | { | |
380 | audplay_cmd_bitstream_data_avail cmd; | |
381 | ||
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)); | |
388 | } | |
389 | ||
390 | static void audamrnb_buffer_refresh(struct audio *audio) | |
391 | { | |
392 | struct audplay_cmd_buffer_refresh refresh_cmd; | |
393 | ||
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)); | |
403 | } | |
404 | ||
405 | static void audamrnb_config_hostpcm(struct audio *audio) | |
406 | { | |
407 | struct audplay_cmd_hpcm_buf_cfg cfg_cmd; | |
408 | ||
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)); | |
417 | ||
418 | } | |
419 | ||
420 | static void audamrnb_send_data(struct audio *audio, unsigned needed) | |
421 | { | |
422 | struct buffer *frame; | |
423 | unsigned long flags; | |
424 | ||
425 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
426 | if (!audio->running) | |
427 | goto done; | |
428 | ||
429 | if (needed) { | |
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 | |
434 | * it). | |
435 | */ | |
436 | audio->out_needed = 1; | |
437 | frame = audio->out + audio->out_tail; | |
438 | if (frame->used == 0xffffffff) { | |
439 | frame->used = 0; | |
440 | audio->out_tail ^= 1; | |
441 | wake_up(&audio->write_wait); | |
442 | } | |
443 | } | |
444 | ||
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 | |
450 | * is requested | |
451 | */ | |
452 | ||
453 | frame = audio->out + audio->out_tail; | |
454 | if (frame->used) { | |
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, | |
458 | frame->used); | |
459 | frame->used = 0xffffffff; | |
460 | audio->out_needed = 0; | |
461 | } | |
462 | } | |
463 | done: | |
464 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
465 | } | |
466 | ||
467 | /* ------------------- device --------------------- */ | |
468 | ||
469 | static void audamrnb_flush(struct audio *audio) | |
470 | { | |
471 | audio->out[0].used = 0; | |
472 | audio->out[1].used = 0; | |
473 | audio->out_head = 0; | |
474 | audio->out_tail = 0; | |
475 | audio->stopped = 0; | |
476 | atomic_set(&audio->out_bytes, 0); | |
477 | } | |
478 | ||
479 | static void audamrnb_flush_pcm_buf(struct audio *audio) | |
480 | { | |
481 | uint8_t index; | |
482 | ||
483 | for (index = 0; index < PCM_BUF_MAX_COUNT; index++) | |
484 | audio->in[index].used = 0; | |
485 | ||
486 | audio->read_next = 0; | |
487 | audio->fill_next = 0; | |
488 | } | |
489 | ||
490 | static long audamrnb_ioctl(struct file *file, unsigned int cmd, | |
491 | unsigned long arg) | |
492 | { | |
493 | struct audio *audio = file->private_data; | |
494 | int rc = 0; | |
495 | ||
496 | dprintk("audamrnb_ioctl() cmd = %d\n", cmd); | |
497 | ||
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))) | |
503 | return -EFAULT; | |
504 | return 0; | |
505 | } | |
506 | if (cmd == AUDIO_SET_VOLUME) { | |
507 | unsigned long flags; | |
508 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
509 | audio->volume = arg; | |
510 | if (audio->running) | |
511 | audpp_set_volume_and_pan(audio->dec_id, arg, 0); | |
512 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
513 | return 0; | |
514 | } | |
515 | mutex_lock(&audio->lock); | |
516 | switch (cmd) { | |
517 | case AUDIO_START: | |
518 | rc = audamrnb_enable(audio); | |
519 | break; | |
520 | case AUDIO_STOP: | |
521 | rc = audamrnb_disable(audio); | |
522 | audio->stopped = 1; | |
523 | break; | |
524 | case AUDIO_FLUSH: | |
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 | |
529 | * exit immediately. | |
530 | */ | |
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); | |
539 | break; | |
540 | } | |
541 | ||
542 | case AUDIO_SET_CONFIG:{ | |
543 | dprintk("AUDIO_SET_CONFIG not applicable \n"); | |
544 | break; | |
545 | } | |
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, | |
557 | sizeof(config))) | |
558 | rc = -EFAULT; | |
559 | else | |
560 | rc = 0; | |
561 | ||
562 | break; | |
563 | } | |
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, | |
570 | sizeof(config))) | |
571 | rc = -EFAULT; | |
572 | else | |
573 | rc = 0; | |
574 | break; | |
575 | } | |
576 | case AUDIO_SET_PCM_CONFIG:{ | |
577 | struct msm_audio_pcm_config config; | |
578 | if (copy_from_user | |
579 | (&config, (void *)arg, sizeof(config))) { | |
580 | rc = -EFAULT; | |
581 | break; | |
582 | } | |
583 | if ((config.buffer_count > PCM_BUF_MAX_COUNT) || | |
584 | (config.buffer_count == 1)) | |
585 | config.buffer_count = PCM_BUF_MAX_COUNT; | |
586 | ||
587 | if (config.buffer_size < PCM_BUFSZ_MIN) | |
588 | config.buffer_size = PCM_BUFSZ_MIN; | |
589 | ||
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 * | |
594 | config.buffer_size); | |
595 | audio->read_data = | |
596 | dma_alloc_coherent(NULL, | |
597 | config.buffer_size * | |
598 | config.buffer_count, | |
599 | &audio->read_phys, | |
600 | GFP_KERNEL); | |
601 | if (!audio->read_data) { | |
602 | pr_err("audamrnb_ioctl: no mem for pcm buf\n"); | |
603 | rc = -1; | |
604 | } else { | |
605 | uint8_t index; | |
606 | uint32_t offset = 0; | |
607 | audio->pcm_feedback = 1; | |
608 | audio->buf_refresh = 0; | |
609 | audio->pcm_buf_count = | |
610 | config.buffer_count; | |
611 | audio->read_next = 0; | |
612 | audio->fill_next = 0; | |
613 | ||
614 | for (index = 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 = | |
621 | config.buffer_size; | |
622 | audio->in[index].used = 0; | |
623 | offset += config.buffer_size; | |
624 | } | |
625 | rc = 0; | |
626 | } | |
627 | } else { | |
628 | rc = 0; | |
629 | } | |
630 | break; | |
631 | } | |
632 | default: | |
633 | rc = -EINVAL; | |
634 | } | |
635 | mutex_unlock(&audio->lock); | |
636 | return rc; | |
637 | } | |
638 | ||
639 | static ssize_t audamrnb_read(struct file *file, char __user *buf, size_t count, | |
640 | loff_t *pos) | |
641 | { | |
642 | struct audio *audio = file->private_data; | |
643 | const char __user *start = buf; | |
644 | int rc = 0; | |
645 | ||
646 | if (!audio->pcm_feedback) | |
647 | return 0; /* PCM feedback is not enabled. Nothing to read */ | |
648 | ||
649 | mutex_lock(&audio->read_lock); | |
650 | dprintk("audamrnb_read() %d \n", count); | |
651 | while (count > 0) { | |
652 | rc = wait_event_interruptible(audio->read_wait, | |
653 | (audio->in[audio->read_next]. | |
654 | used > 0) || (audio->stopped)); | |
655 | ||
656 | if (rc < 0) | |
657 | break; | |
658 | ||
659 | if (audio->stopped) { | |
660 | rc = -EBUSY; | |
661 | break; | |
662 | } | |
663 | ||
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 | |
668 | */ | |
669 | dprintk("audamrnb_read:read stop - partial frame\n"); | |
670 | break; | |
671 | } else { | |
672 | dprintk("audamrnb_read: read from in[%d]\n", | |
673 | audio->read_next); | |
674 | if (copy_to_user | |
675 | (buf, audio->in[audio->read_next].data, | |
676 | audio->in[audio->read_next].used)) { | |
677 | pr_err("audamrnb_read: invalid addr %x \n", | |
678 | (unsigned int)buf); | |
679 | rc = -EFAULT; | |
680 | break; | |
681 | } | |
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; | |
687 | } | |
688 | } | |
689 | ||
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); | |
694 | } | |
695 | ||
696 | mutex_unlock(&audio->read_lock); | |
697 | ||
698 | if (buf > start) | |
699 | rc = buf - start; | |
700 | ||
701 | dprintk("audamrnb_read: read %d bytes\n", rc); | |
702 | return rc; | |
703 | } | |
704 | ||
705 | static ssize_t audamrnb_write(struct file *file, const char __user *buf, | |
706 | size_t count, loff_t *pos) | |
707 | { | |
708 | struct audio *audio = file->private_data; | |
709 | const char __user *start = buf; | |
710 | struct buffer *frame; | |
711 | size_t xfer; | |
712 | int rc = 0; | |
713 | ||
714 | if (count & 1) | |
715 | return -EINVAL; | |
716 | dprintk("audamrnb_write() \n"); | |
717 | mutex_lock(&audio->write_lock); | |
718 | while (count > 0) { | |
719 | frame = audio->out + audio->out_head; | |
720 | rc = wait_event_interruptible(audio->write_wait, | |
721 | (frame->used == 0) | |
722 | || (audio->stopped)); | |
723 | dprintk("audamrnb_write() buffer available\n"); | |
724 | if (rc < 0) | |
725 | break; | |
726 | if (audio->stopped) { | |
727 | rc = -EBUSY; | |
728 | break; | |
729 | } | |
730 | xfer = (count > frame->size) ? frame->size : count; | |
731 | if (copy_from_user(frame->data, buf, xfer)) { | |
732 | rc = -EFAULT; | |
733 | break; | |
734 | } | |
735 | ||
736 | frame->used = xfer; | |
737 | audio->out_head ^= 1; | |
738 | count -= xfer; | |
739 | buf += xfer; | |
740 | ||
741 | audamrnb_send_data(audio, 0); | |
742 | ||
743 | } | |
744 | mutex_unlock(&audio->write_lock); | |
745 | if (buf > start) | |
746 | return buf - start; | |
747 | return rc; | |
748 | } | |
749 | ||
750 | static int audamrnb_release(struct inode *inode, struct file *file) | |
751 | { | |
752 | struct audio *audio = file->private_data; | |
753 | ||
754 | dprintk("audamrnb_release()\n"); | |
755 | ||
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; | |
762 | audio->opened = 0; | |
763 | dma_free_coherent(NULL, DMASZ, audio->data, audio->phys); | |
764 | audio->data = NULL; | |
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; | |
770 | } | |
771 | audio->pcm_feedback = 0; | |
772 | mutex_unlock(&audio->lock); | |
773 | return 0; | |
774 | } | |
775 | ||
776 | static struct audio the_amrnb_audio; | |
777 | ||
778 | static int audamrnb_open(struct inode *inode, struct file *file) | |
779 | { | |
780 | struct audio *audio = &the_amrnb_audio; | |
781 | int rc; | |
782 | ||
783 | mutex_lock(&audio->lock); | |
784 | ||
785 | if (audio->opened) { | |
786 | pr_err("audio: busy\n"); | |
787 | rc = -EBUSY; | |
788 | goto done; | |
789 | } | |
790 | ||
791 | if (!audio->data) { | |
792 | audio->data = dma_alloc_coherent(NULL, DMASZ, | |
793 | &audio->phys, GFP_KERNEL); | |
794 | if (!audio->data) { | |
795 | pr_err("audio: could not allocate DMA buffers\n"); | |
796 | rc = -ENOMEM; | |
797 | goto done; | |
798 | } | |
799 | } | |
800 | ||
801 | rc = audmgr_open(&audio->audmgr); | |
802 | if (rc) | |
803 | goto done; | |
804 | ||
805 | rc = msm_adsp_get("AUDPLAY0TASK", &audio->audplay, | |
806 | &audplay_adsp_ops_amrnb, audio); | |
807 | if (rc) { | |
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); | |
811 | audio->data = NULL; | |
812 | goto done; | |
813 | } | |
814 | ||
815 | audio->dec_id = 0; | |
816 | ||
817 | audio->out[0].data = audio->data + 0; | |
818 | audio->out[0].addr = audio->phys + 0; | |
819 | audio->out[0].size = BUFSZ; | |
820 | ||
821 | audio->out[1].data = audio->data + BUFSZ; | |
822 | audio->out[1].addr = audio->phys + BUFSZ; | |
823 | audio->out[1].size = BUFSZ; | |
824 | ||
825 | audio->volume = 0x2000; /* Q13 1.0 */ | |
826 | ||
827 | audamrnb_flush(audio); | |
828 | ||
829 | file->private_data = audio; | |
830 | audio->opened = 1; | |
831 | rc = 0; | |
832 | done: | |
833 | mutex_unlock(&audio->lock); | |
834 | return rc; | |
835 | } | |
836 | ||
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, | |
6038f373 | 844 | .llseek = noop_llseek, |
caff4cae IM |
845 | }; |
846 | ||
847 | struct miscdevice audio_amrnb_misc = { | |
848 | .minor = MISC_DYNAMIC_MINOR, | |
849 | .name = "msm_amrnb", | |
850 | .fops = &audio_amrnb_fops, | |
851 | }; | |
852 | ||
853 | static int __init audamrnb_init(void) | |
854 | { | |
855 | mutex_init(&the_amrnb_audio.lock); | |
856 | mutex_init(&the_amrnb_audio.write_lock); | |
857 | mutex_init(&the_amrnb_audio.read_lock); | |
858 | spin_lock_init(&the_amrnb_audio.dsp_lock); | |
859 | init_waitqueue_head(&the_amrnb_audio.write_wait); | |
860 | init_waitqueue_head(&the_amrnb_audio.read_wait); | |
861 | the_amrnb_audio.read_data = NULL; | |
862 | return misc_register(&audio_amrnb_misc); | |
863 | } | |
864 | ||
865 | static void __exit audamrnb_exit(void) | |
866 | { | |
867 | misc_deregister(&audio_amrnb_misc); | |
868 | } | |
869 | ||
870 | module_init(audamrnb_init); | |
871 | module_exit(audamrnb_exit); | |
872 | ||
873 | MODULE_DESCRIPTION("MSM AMR-NB driver"); | |
874 | MODULE_LICENSE("GPL v2"); | |
875 | MODULE_AUTHOR("QUALCOMM Inc"); |