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1 | /* arch/arm/mach-msm/qdsp5/audio_qcelp.c |
2 | * | |
3 | * qcelp 13k audio decoder device | |
4 | * | |
5 | * Copyright (c) 2008 QUALCOMM USA, INC. | |
6 | * | |
7 | * This code is based in part on audio_mp3.c, which is | |
8 | * Copyright (C) 2008 Google, Inc. | |
9 | * Copyright (C) 2008 HTC Corporation | |
10 | * | |
11 | * This software is licensed under the terms of the GNU General Public | |
12 | * License version 2, as published by the Free Software Foundation, and | |
13 | * may be copied, distributed, and modified under those terms. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
18 | * | |
19 | * See the GNU General Public License for more details. | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, you can find it at http://www.fsf.org. | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/module.h> | |
26 | #include <linux/fs.h> | |
27 | #include <linux/miscdevice.h> | |
28 | #include <linux/uaccess.h> | |
29 | #include <linux/sched.h> | |
30 | #include <linux/wait.h> | |
31 | #include <linux/dma-mapping.h> | |
5a0e3ad6 | 32 | #include <linux/gfp.h> |
caff4cae IM |
33 | |
34 | #include <asm/ioctls.h> | |
35 | #include <mach/msm_adsp.h> | |
36 | #include <linux/msm_audio.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 | #include "audmgr.h" | |
43 | /* for queue ids - should be relative to module number*/ | |
44 | #include "adsp.h" | |
45 | ||
46 | #ifdef DEBUG | |
47 | #define dprintk(format, arg...) \ | |
48 | printk(KERN_DEBUG format, ## arg) | |
49 | #else | |
50 | #define dprintk(format, arg...) do {} while (0) | |
51 | #endif | |
52 | ||
53 | #define BUFSZ 1080 /* QCELP 13K Hold 600ms packet data = 36 * 30 */ | |
54 | #define BUF_COUNT 2 | |
55 | #define DMASZ (BUFSZ * BUF_COUNT) | |
56 | ||
57 | #define PCM_BUFSZ_MIN 1600 /* 100ms worth of data */ | |
58 | #define PCM_BUF_MAX_COUNT 5 | |
59 | ||
60 | #define AUDDEC_DEC_QCELP 9 | |
61 | ||
62 | #define ROUTING_MODE_FTRT 1 | |
63 | #define ROUTING_MODE_RT 2 | |
64 | /* Decoder status received from AUDPPTASK */ | |
65 | #define AUDPP_DEC_STATUS_SLEEP 0 | |
66 | #define AUDPP_DEC_STATUS_INIT 1 | |
67 | #define AUDPP_DEC_STATUS_CFG 2 | |
68 | #define AUDPP_DEC_STATUS_PLAY 3 | |
69 | ||
70 | struct buffer { | |
71 | void *data; | |
72 | unsigned size; | |
73 | unsigned used; /* Input usage actual DSP produced PCM size */ | |
74 | unsigned addr; | |
75 | }; | |
76 | ||
77 | struct audio { | |
78 | struct buffer out[BUF_COUNT]; | |
79 | ||
80 | spinlock_t dsp_lock; | |
81 | ||
82 | uint8_t out_head; | |
83 | uint8_t out_tail; | |
84 | uint8_t out_needed; /* number of buffers the dsp is waiting for */ | |
85 | ||
86 | struct mutex lock; | |
87 | struct mutex write_lock; | |
88 | wait_queue_head_t write_wait; | |
89 | ||
90 | /* Host PCM section - START */ | |
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 | /* Host PCM section - END */ | |
100 | ||
101 | struct msm_adsp_module *audplay; | |
102 | ||
103 | struct audmgr audmgr; | |
104 | ||
105 | /* data allocated for various buffers */ | |
106 | char *data; | |
107 | dma_addr_t phys; | |
108 | ||
109 | uint8_t opened:1; | |
110 | uint8_t enabled:1; | |
111 | uint8_t running:1; | |
112 | uint8_t stopped:1; /* set when stopped, cleared on flush */ | |
113 | uint8_t pcm_feedback:1; /* set when non-tunnel mode */ | |
114 | uint8_t buf_refresh:1; | |
115 | ||
116 | unsigned volume; | |
117 | ||
118 | uint16_t dec_id; | |
119 | }; | |
120 | ||
121 | static struct audio the_qcelp_audio; | |
122 | ||
123 | static int auddec_dsp_config(struct audio *audio, int enable); | |
124 | static void audpp_cmd_cfg_adec_params(struct audio *audio); | |
125 | static void audpp_cmd_cfg_routing_mode(struct audio *audio); | |
126 | static void audqcelp_send_data(struct audio *audio, unsigned needed); | |
127 | static void audqcelp_config_hostpcm(struct audio *audio); | |
128 | static void audqcelp_buffer_refresh(struct audio *audio); | |
129 | static void audqcelp_dsp_event(void *private, unsigned id, uint16_t *msg); | |
130 | ||
131 | /* must be called with audio->lock held */ | |
132 | static int audqcelp_enable(struct audio *audio) | |
133 | { | |
134 | struct audmgr_config cfg; | |
135 | int rc; | |
136 | ||
137 | dprintk("audqcelp_enable()\n"); | |
138 | ||
139 | if (audio->enabled) | |
140 | return 0; | |
141 | ||
142 | audio->out_tail = 0; | |
143 | audio->out_needed = 0; | |
144 | ||
145 | cfg.tx_rate = RPC_AUD_DEF_SAMPLE_RATE_NONE; | |
146 | cfg.rx_rate = RPC_AUD_DEF_SAMPLE_RATE_48000; | |
147 | cfg.def_method = RPC_AUD_DEF_METHOD_PLAYBACK; | |
148 | cfg.codec = RPC_AUD_DEF_CODEC_13K; | |
149 | cfg.snd_method = RPC_SND_METHOD_MIDI; | |
150 | ||
151 | rc = audmgr_enable(&audio->audmgr, &cfg); | |
152 | if (rc < 0) | |
153 | return rc; | |
154 | ||
155 | if (msm_adsp_enable(audio->audplay)) { | |
156 | pr_err("audio: msm_adsp_enable(audplay) failed\n"); | |
157 | audmgr_disable(&audio->audmgr); | |
158 | return -ENODEV; | |
159 | } | |
160 | ||
161 | if (audpp_enable(audio->dec_id, audqcelp_dsp_event, audio)) { | |
162 | pr_err("audio: audpp_enable() failed\n"); | |
163 | msm_adsp_disable(audio->audplay); | |
164 | audmgr_disable(&audio->audmgr); | |
165 | return -ENODEV; | |
166 | } | |
167 | audio->enabled = 1; | |
168 | return 0; | |
169 | } | |
170 | ||
171 | /* must be called with audio->lock held */ | |
172 | static int audqcelp_disable(struct audio *audio) | |
173 | { | |
174 | dprintk("audqcelp_disable()\n"); | |
175 | if (audio->enabled) { | |
176 | audio->enabled = 0; | |
177 | auddec_dsp_config(audio, 0); | |
178 | wake_up(&audio->write_wait); | |
179 | wake_up(&audio->read_wait); | |
180 | msm_adsp_disable(audio->audplay); | |
181 | audpp_disable(audio->dec_id, audio); | |
182 | audmgr_disable(&audio->audmgr); | |
183 | audio->out_needed = 0; | |
184 | } | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* ------------------- dsp --------------------- */ | |
189 | static void audqcelp_update_pcm_buf_entry(struct audio *audio, | |
190 | uint32_t *payload) | |
191 | { | |
192 | uint8_t index; | |
193 | unsigned long flags; | |
194 | ||
195 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
196 | for (index = 0; index < payload[1]; index++) { | |
197 | if (audio->in[audio->fill_next].addr == | |
198 | payload[2 + index * 2]) { | |
199 | dprintk("audqcelp_update_pcm_buf_entry: in[%d] ready\n", | |
200 | audio->fill_next); | |
201 | audio->in[audio->fill_next].used = | |
202 | payload[3 + index * 2]; | |
203 | if ((++audio->fill_next) == audio->pcm_buf_count) | |
204 | audio->fill_next = 0; | |
205 | } else { | |
206 | pr_err( | |
207 | "audqcelp_update_pcm_buf_entry: expected=%x ret=%x\n", | |
208 | audio->in[audio->fill_next].addr, | |
209 | payload[1 + index * 2]); | |
210 | break; | |
211 | } | |
212 | } | |
213 | if (audio->in[audio->fill_next].used == 0) { | |
214 | audqcelp_buffer_refresh(audio); | |
215 | } else { | |
216 | dprintk("audqcelp_update_pcm_buf_entry: read cannot keep up\n"); | |
217 | audio->buf_refresh = 1; | |
218 | } | |
219 | ||
220 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
221 | wake_up(&audio->read_wait); | |
222 | } | |
223 | ||
224 | static void audplay_dsp_event(void *data, unsigned id, size_t len, | |
225 | void (*getevent) (void *ptr, size_t len)) | |
226 | { | |
227 | struct audio *audio = data; | |
228 | uint32_t msg[28]; | |
229 | getevent(msg, sizeof(msg)); | |
230 | ||
231 | dprintk("audplay_dsp_event: msg_id=%x\n", id); | |
232 | ||
233 | switch (id) { | |
234 | case AUDPLAY_MSG_DEC_NEEDS_DATA: | |
235 | audqcelp_send_data(audio, 1); | |
236 | break; | |
237 | ||
238 | case AUDPLAY_MSG_BUFFER_UPDATE: | |
239 | audqcelp_update_pcm_buf_entry(audio, msg); | |
240 | break; | |
241 | ||
242 | default: | |
243 | pr_err("unexpected message from decoder \n"); | |
244 | } | |
245 | } | |
246 | ||
247 | static void audqcelp_dsp_event(void *private, unsigned id, uint16_t *msg) | |
248 | { | |
249 | struct audio *audio = private; | |
250 | ||
251 | switch (id) { | |
252 | case AUDPP_MSG_STATUS_MSG:{ | |
253 | unsigned status = msg[1]; | |
254 | ||
255 | switch (status) { | |
256 | case AUDPP_DEC_STATUS_SLEEP: | |
257 | dprintk("decoder status: sleep \n"); | |
258 | break; | |
259 | ||
260 | case AUDPP_DEC_STATUS_INIT: | |
261 | dprintk("decoder status: init \n"); | |
262 | audpp_cmd_cfg_routing_mode(audio); | |
263 | break; | |
264 | ||
265 | case AUDPP_DEC_STATUS_CFG: | |
266 | dprintk("decoder status: cfg \n"); | |
267 | break; | |
268 | case AUDPP_DEC_STATUS_PLAY: | |
269 | dprintk("decoder status: play \n"); | |
270 | if (audio->pcm_feedback) { | |
271 | audqcelp_config_hostpcm(audio); | |
272 | audqcelp_buffer_refresh(audio); | |
273 | } | |
274 | break; | |
275 | default: | |
276 | pr_err("unknown decoder status \n"); | |
277 | } | |
278 | break; | |
279 | } | |
280 | case AUDPP_MSG_CFG_MSG: | |
281 | if (msg[0] == AUDPP_MSG_ENA_ENA) { | |
282 | dprintk("audqcelp_dsp_event: CFG_MSG ENABLE\n"); | |
283 | auddec_dsp_config(audio, 1); | |
284 | audio->out_needed = 0; | |
285 | audio->running = 1; | |
286 | audpp_set_volume_and_pan(audio->dec_id, audio->volume, | |
287 | 0); | |
288 | audpp_avsync(audio->dec_id, 22050); | |
289 | } else if (msg[0] == AUDPP_MSG_ENA_DIS) { | |
290 | dprintk("audqcelp_dsp_event: CFG_MSG DISABLE\n"); | |
291 | audpp_avsync(audio->dec_id, 0); | |
292 | audio->running = 0; | |
293 | } else { | |
294 | pr_err("audqcelp_dsp_event: CFG_MSG %d?\n", msg[0]); | |
295 | } | |
296 | break; | |
297 | case AUDPP_MSG_ROUTING_ACK: | |
298 | dprintk("audqcelp_dsp_event: ROUTING_ACK mode=%d\n", msg[1]); | |
299 | audpp_cmd_cfg_adec_params(audio); | |
300 | break; | |
301 | default: | |
302 | pr_err("audqcelp_dsp_event: UNKNOWN (%d)\n", id); | |
303 | } | |
304 | ||
305 | } | |
306 | ||
307 | struct msm_adsp_ops audplay_adsp_ops_qcelp = { | |
308 | .event = audplay_dsp_event, | |
309 | }; | |
310 | ||
311 | #define audplay_send_queue0(audio, cmd, len) \ | |
312 | msm_adsp_write(audio->audplay, QDSP_uPAudPlay0BitStreamCtrlQueue, \ | |
313 | cmd, len) | |
314 | ||
315 | static int auddec_dsp_config(struct audio *audio, int enable) | |
316 | { | |
317 | audpp_cmd_cfg_dec_type cmd; | |
318 | ||
319 | memset(&cmd, 0, sizeof(cmd)); | |
320 | cmd.cmd_id = AUDPP_CMD_CFG_DEC_TYPE; | |
321 | if (enable) | |
322 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | | |
323 | AUDPP_CMD_ENA_DEC_V | AUDDEC_DEC_QCELP; | |
324 | else | |
325 | cmd.dec0_cfg = AUDPP_CMD_UPDATDE_CFG_DEC | AUDPP_CMD_DIS_DEC_V; | |
326 | ||
327 | return audpp_send_queue1(&cmd, sizeof(cmd)); | |
328 | } | |
329 | ||
330 | static void audpp_cmd_cfg_adec_params(struct audio *audio) | |
331 | { | |
332 | struct audpp_cmd_cfg_adec_params_v13k cmd; | |
333 | ||
334 | memset(&cmd, 0, sizeof(cmd)); | |
335 | cmd.common.cmd_id = AUDPP_CMD_CFG_ADEC_PARAMS; | |
336 | cmd.common.length = AUDPP_CMD_CFG_ADEC_PARAMS_V13K_LEN; | |
337 | cmd.common.dec_id = audio->dec_id; | |
338 | cmd.common.input_sampling_frequency = 8000; | |
339 | cmd.stereo_cfg = AUDPP_CMD_PCM_INTF_MONO_V; | |
340 | ||
341 | audpp_send_queue2(&cmd, sizeof(cmd)); | |
342 | } | |
343 | ||
344 | static void audpp_cmd_cfg_routing_mode(struct audio *audio) | |
345 | { | |
346 | struct audpp_cmd_routing_mode cmd; | |
347 | dprintk("audpp_cmd_cfg_routing_mode()\n"); | |
348 | memset(&cmd, 0, sizeof(cmd)); | |
349 | cmd.cmd_id = AUDPP_CMD_ROUTING_MODE; | |
350 | cmd.object_number = audio->dec_id; | |
351 | if (audio->pcm_feedback) | |
352 | cmd.routing_mode = ROUTING_MODE_FTRT; | |
353 | else | |
354 | cmd.routing_mode = ROUTING_MODE_RT; | |
355 | audpp_send_queue1(&cmd, sizeof(cmd)); | |
356 | } | |
357 | ||
358 | static int audplay_dsp_send_data_avail(struct audio *audio, | |
359 | unsigned idx, unsigned len) | |
360 | { | |
361 | audplay_cmd_bitstream_data_avail cmd; | |
362 | ||
363 | cmd.cmd_id = AUDPLAY_CMD_BITSTREAM_DATA_AVAIL; | |
364 | cmd.decoder_id = audio->dec_id; | |
365 | cmd.buf_ptr = audio->out[idx].addr; | |
366 | cmd.buf_size = len / 2; | |
367 | cmd.partition_number = 0; | |
368 | return audplay_send_queue0(audio, &cmd, sizeof(cmd)); | |
369 | } | |
370 | ||
371 | static void audqcelp_buffer_refresh(struct audio *audio) | |
372 | { | |
373 | struct audplay_cmd_buffer_refresh refresh_cmd; | |
374 | ||
375 | refresh_cmd.cmd_id = AUDPLAY_CMD_BUFFER_REFRESH; | |
376 | refresh_cmd.num_buffers = 1; | |
377 | refresh_cmd.buf0_address = audio->in[audio->fill_next].addr; | |
378 | refresh_cmd.buf0_length = audio->in[audio->fill_next].size; | |
379 | refresh_cmd.buf_read_count = 0; | |
380 | dprintk("audplay_buffer_fresh: buf0_addr=%x buf0_len=%d\n", | |
381 | refresh_cmd.buf0_address, refresh_cmd.buf0_length); | |
382 | ||
383 | (void)audplay_send_queue0(audio, &refresh_cmd, sizeof(refresh_cmd)); | |
384 | } | |
385 | ||
386 | static void audqcelp_config_hostpcm(struct audio *audio) | |
387 | { | |
388 | struct audplay_cmd_hpcm_buf_cfg cfg_cmd; | |
389 | ||
390 | dprintk("audqcelp_config_hostpcm()\n"); | |
391 | cfg_cmd.cmd_id = AUDPLAY_CMD_HPCM_BUF_CFG; | |
392 | cfg_cmd.max_buffers = audio->pcm_buf_count; | |
393 | cfg_cmd.byte_swap = 0; | |
394 | cfg_cmd.hostpcm_config = (0x8000) | (0x4000); | |
395 | cfg_cmd.feedback_frequency = 1; | |
396 | cfg_cmd.partition_number = 0; | |
397 | ||
398 | (void)audplay_send_queue0(audio, &cfg_cmd, sizeof(cfg_cmd)); | |
399 | } | |
400 | ||
401 | static void audqcelp_send_data(struct audio *audio, unsigned needed) | |
402 | { | |
403 | struct buffer *frame; | |
404 | unsigned long flags; | |
405 | ||
406 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
407 | if (!audio->running) | |
408 | goto done; | |
409 | ||
410 | if (needed) { | |
411 | /* We were called from the callback because the DSP | |
412 | * requested more data. Note that the DSP does want | |
413 | * more data, and if a buffer was in-flight, mark it | |
414 | * as available (since the DSP must now be done with | |
415 | * it). | |
416 | */ | |
417 | audio->out_needed = 1; | |
418 | frame = audio->out + audio->out_tail; | |
419 | if (frame->used == 0xffffffff) { | |
420 | dprintk("frame %d free\n", audio->out_tail); | |
421 | frame->used = 0; | |
422 | audio->out_tail ^= 1; | |
423 | wake_up(&audio->write_wait); | |
424 | } | |
425 | } | |
426 | ||
427 | if (audio->out_needed) { | |
428 | /* If the DSP currently wants data and we have a | |
429 | * buffer available, we will send it and reset | |
430 | * the needed flag. We'll mark the buffer as in-flight | |
431 | * so that it won't be recycled until the next buffer | |
432 | * is requested | |
433 | */ | |
434 | ||
435 | frame = audio->out + audio->out_tail; | |
436 | if (frame->used) { | |
437 | BUG_ON(frame->used == 0xffffffff); | |
438 | dprintk("frame %d busy\n", audio->out_tail); | |
439 | audplay_dsp_send_data_avail(audio, audio->out_tail, | |
440 | frame->used); | |
441 | frame->used = 0xffffffff; | |
442 | audio->out_needed = 0; | |
443 | } | |
444 | } | |
445 | done: | |
446 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
447 | } | |
448 | ||
449 | /* ------------------- device --------------------- */ | |
450 | ||
451 | static void audqcelp_flush(struct audio *audio) | |
452 | { | |
453 | audio->out[0].used = 0; | |
454 | audio->out[1].used = 0; | |
455 | audio->out_head = 0; | |
456 | audio->out_tail = 0; | |
457 | audio->stopped = 0; | |
458 | } | |
459 | ||
460 | static void audqcelp_flush_pcm_buf(struct audio *audio) | |
461 | { | |
462 | uint8_t index; | |
463 | ||
464 | for (index = 0; index < PCM_BUF_MAX_COUNT; index++) | |
465 | audio->in[index].used = 0; | |
466 | ||
467 | audio->read_next = 0; | |
468 | audio->fill_next = 0; | |
469 | } | |
470 | ||
471 | static long audqcelp_ioctl(struct file *file, unsigned int cmd, | |
472 | unsigned long arg) | |
473 | { | |
474 | struct audio *audio = file->private_data; | |
475 | int rc = 0; | |
476 | ||
477 | dprintk("audqcelp_ioctl() cmd = %d\n", cmd); | |
478 | ||
479 | if (cmd == AUDIO_GET_STATS) { | |
480 | struct msm_audio_stats stats; | |
481 | stats.byte_count = audpp_avsync_byte_count(audio->dec_id); | |
482 | stats.sample_count = audpp_avsync_sample_count(audio->dec_id); | |
483 | if (copy_to_user((void *)arg, &stats, sizeof(stats))) | |
484 | return -EFAULT; | |
485 | return 0; | |
486 | } | |
487 | if (cmd == AUDIO_SET_VOLUME) { | |
488 | unsigned long flags; | |
489 | spin_lock_irqsave(&audio->dsp_lock, flags); | |
490 | audio->volume = arg; | |
491 | if (audio->running) | |
492 | audpp_set_volume_and_pan(audio->dec_id, arg, 0); | |
493 | spin_unlock_irqrestore(&audio->dsp_lock, flags); | |
494 | return 0; | |
495 | } | |
496 | mutex_lock(&audio->lock); | |
497 | switch (cmd) { | |
498 | case AUDIO_START: | |
499 | rc = audqcelp_enable(audio); | |
500 | break; | |
501 | case AUDIO_STOP: | |
502 | rc = audqcelp_disable(audio); | |
503 | audio->stopped = 1; | |
504 | break; | |
505 | case AUDIO_FLUSH: | |
506 | if (audio->stopped) { | |
507 | /* Make sure we're stopped and we wake any threads | |
508 | * that might be blocked holding the write_lock. | |
509 | * While audio->stopped write threads will always | |
510 | * exit immediately. | |
511 | */ | |
512 | wake_up(&audio->write_wait); | |
513 | mutex_lock(&audio->write_lock); | |
514 | audqcelp_flush(audio); | |
515 | mutex_unlock(&audio->write_lock); | |
516 | wake_up(&audio->read_wait); | |
517 | mutex_lock(&audio->read_lock); | |
518 | audqcelp_flush_pcm_buf(audio); | |
519 | mutex_unlock(&audio->read_lock); | |
520 | break; | |
521 | } | |
522 | break; | |
523 | case AUDIO_SET_CONFIG: | |
524 | dprintk("AUDIO_SET_CONFIG not applicable \n"); | |
525 | break; | |
526 | case AUDIO_GET_CONFIG:{ | |
527 | struct msm_audio_config config; | |
528 | config.buffer_size = BUFSZ; | |
529 | config.buffer_count = BUF_COUNT; | |
530 | config.sample_rate = 8000; | |
531 | config.channel_count = 1; | |
532 | config.unused[0] = 0; | |
533 | config.unused[1] = 0; | |
534 | config.unused[2] = 0; | |
535 | config.unused[3] = 0; | |
536 | if (copy_to_user((void *)arg, &config, | |
537 | sizeof(config))) | |
538 | rc = -EFAULT; | |
539 | else | |
540 | rc = 0; | |
541 | ||
542 | break; | |
543 | } | |
544 | case AUDIO_GET_PCM_CONFIG:{ | |
545 | struct msm_audio_pcm_config config; | |
546 | ||
547 | config.pcm_feedback = 0; | |
548 | config.buffer_count = PCM_BUF_MAX_COUNT; | |
549 | config.buffer_size = PCM_BUFSZ_MIN; | |
550 | if (copy_to_user((void *)arg, &config, | |
551 | sizeof(config))) | |
552 | rc = -EFAULT; | |
553 | else | |
554 | rc = 0; | |
555 | break; | |
556 | } | |
557 | case AUDIO_SET_PCM_CONFIG:{ | |
558 | struct msm_audio_pcm_config config; | |
559 | ||
560 | if (copy_from_user(&config, (void *)arg, | |
561 | sizeof(config))) { | |
562 | rc = -EFAULT; | |
563 | break; | |
564 | } | |
565 | if ((config.buffer_count > PCM_BUF_MAX_COUNT) || | |
566 | (config.buffer_count == 1)) | |
567 | config.buffer_count = PCM_BUF_MAX_COUNT; | |
568 | ||
569 | if (config.buffer_size < PCM_BUFSZ_MIN) | |
570 | config.buffer_size = PCM_BUFSZ_MIN; | |
571 | ||
572 | /* Check if pcm feedback is required */ | |
573 | if ((config.pcm_feedback) && (!audio->read_data)) { | |
574 | dprintk( | |
575 | "audqcelp_ioctl: allocate PCM buf %d\n", | |
576 | config.buffer_count * config.buffer_size); | |
577 | audio->read_data = dma_alloc_coherent(NULL, | |
578 | config.buffer_size * config.buffer_count, | |
579 | &audio->read_phys, GFP_KERNEL); | |
580 | if (!audio->read_data) { | |
581 | pr_err( | |
582 | "audqcelp_ioctl: no mem for pcm buf\n" | |
583 | ); | |
584 | rc = -ENOMEM; | |
585 | } else { | |
586 | uint8_t index; | |
587 | uint32_t offset = 0; | |
588 | ||
589 | audio->pcm_feedback = 1; | |
590 | audio->buf_refresh = 0; | |
591 | audio->pcm_buf_count = | |
592 | config.buffer_count; | |
593 | audio->read_next = 0; | |
594 | audio->fill_next = 0; | |
595 | ||
596 | for (index = 0; | |
597 | index < config.buffer_count; index++) { | |
598 | audio->in[index].data = | |
599 | audio->read_data + offset; | |
600 | audio->in[index].addr = | |
601 | audio->read_phys + offset; | |
602 | audio->in[index].size = | |
603 | config.buffer_size; | |
604 | audio->in[index].used = 0; | |
605 | offset += config.buffer_size; | |
606 | } | |
607 | rc = 0; | |
608 | } | |
609 | } else { | |
610 | rc = 0; | |
611 | } | |
612 | break; | |
613 | } | |
614 | case AUDIO_PAUSE: | |
615 | dprintk("%s: AUDIO_PAUSE %ld\n", __func__, arg); | |
616 | rc = audpp_pause(audio->dec_id, (int) arg); | |
617 | break; | |
618 | default: | |
619 | rc = -EINVAL; | |
620 | } | |
621 | mutex_unlock(&audio->lock); | |
622 | return rc; | |
623 | } | |
624 | ||
625 | static ssize_t audqcelp_read(struct file *file, char __user *buf, size_t count, | |
626 | loff_t *pos) | |
627 | { | |
628 | struct audio *audio = file->private_data; | |
629 | const char __user *start = buf; | |
630 | int rc = 0; | |
631 | ||
632 | if (!audio->pcm_feedback) | |
633 | return 0; /* PCM feedback is not enabled. Nothing to read */ | |
634 | ||
635 | mutex_lock(&audio->read_lock); | |
636 | dprintk("audqcelp_read() %d \n", count); | |
637 | while (count > 0) { | |
638 | rc = wait_event_interruptible(audio->read_wait, | |
639 | (audio->in[audio->read_next].used > 0) || | |
640 | (audio->stopped)); | |
641 | if (rc < 0) | |
642 | break; | |
643 | ||
644 | if (audio->stopped) { | |
645 | rc = -EBUSY; | |
646 | break; | |
647 | } | |
648 | ||
649 | if (count < audio->in[audio->read_next].used) { | |
650 | /* Read must happen in frame boundary. Since driver does | |
651 | not know frame size, read count must be greater or equal | |
652 | to size of PCM samples */ | |
653 | dprintk("audqcelp_read:read stop - partial frame\n"); | |
654 | break; | |
655 | } else { | |
656 | dprintk("audqcelp_read: read from in[%d]\n", | |
657 | audio->read_next); | |
658 | if (copy_to_user(buf, | |
659 | audio->in[audio->read_next].data, | |
660 | audio->in[audio->read_next].used)) { | |
661 | pr_err("audqcelp_read: invalid addr %x \n", | |
662 | (unsigned int)buf); | |
663 | rc = -EFAULT; | |
664 | break; | |
665 | } | |
666 | count -= audio->in[audio->read_next].used; | |
667 | buf += audio->in[audio->read_next].used; | |
668 | audio->in[audio->read_next].used = 0; | |
669 | if ((++audio->read_next) == audio->pcm_buf_count) | |
670 | audio->read_next = 0; | |
671 | } | |
672 | } | |
673 | ||
674 | if (audio->buf_refresh) { | |
675 | audio->buf_refresh = 0; | |
676 | dprintk("audqcelp_read: kick start pcm feedback again\n"); | |
677 | audqcelp_buffer_refresh(audio); | |
678 | } | |
679 | ||
680 | mutex_unlock(&audio->read_lock); | |
681 | ||
682 | if (buf > start) | |
683 | rc = buf - start; | |
684 | ||
685 | dprintk("audqcelp_read: read %d bytes\n", rc); | |
686 | return rc; | |
687 | } | |
688 | ||
689 | static ssize_t audqcelp_write(struct file *file, const char __user *buf, | |
690 | size_t count, loff_t *pos) | |
691 | { | |
692 | struct audio *audio = file->private_data; | |
693 | const char __user *start = buf; | |
694 | struct buffer *frame; | |
695 | size_t xfer; | |
696 | int rc = 0; | |
697 | ||
698 | if (count & 1) | |
699 | return -EINVAL; | |
700 | dprintk("audqcelp_write() \n"); | |
701 | mutex_lock(&audio->write_lock); | |
702 | while (count > 0) { | |
703 | frame = audio->out + audio->out_head; | |
704 | rc = wait_event_interruptible(audio->write_wait, | |
705 | (frame->used == 0) | |
706 | || (audio->stopped)); | |
707 | dprintk("audqcelp_write() buffer available\n"); | |
708 | if (rc < 0) | |
709 | break; | |
710 | if (audio->stopped) { | |
711 | rc = -EBUSY; | |
712 | break; | |
713 | } | |
714 | xfer = (count > frame->size) ? frame->size : count; | |
715 | if (copy_from_user(frame->data, buf, xfer)) { | |
716 | rc = -EFAULT; | |
717 | break; | |
718 | } | |
719 | ||
720 | frame->used = xfer; | |
721 | audio->out_head ^= 1; | |
722 | count -= xfer; | |
723 | buf += xfer; | |
724 | ||
725 | audqcelp_send_data(audio, 0); | |
726 | ||
727 | } | |
728 | mutex_unlock(&audio->write_lock); | |
729 | if (buf > start) | |
730 | return buf - start; | |
731 | return rc; | |
732 | } | |
733 | ||
734 | static int audqcelp_release(struct inode *inode, struct file *file) | |
735 | { | |
736 | struct audio *audio = file->private_data; | |
737 | ||
738 | dprintk("audqcelp_release()\n"); | |
739 | ||
740 | mutex_lock(&audio->lock); | |
741 | audqcelp_disable(audio); | |
742 | audqcelp_flush(audio); | |
743 | audqcelp_flush_pcm_buf(audio); | |
744 | msm_adsp_put(audio->audplay); | |
745 | audio->audplay = NULL; | |
746 | audio->opened = 0; | |
747 | if (audio->data) | |
748 | dma_free_coherent(NULL, DMASZ, audio->data, audio->phys); | |
749 | audio->data = NULL; | |
750 | if (audio->read_data) { | |
751 | dma_free_coherent(NULL, | |
752 | audio->in[0].size * audio->pcm_buf_count, | |
753 | audio->read_data, audio->read_phys); | |
754 | audio->read_data = NULL; | |
755 | } | |
756 | audio->pcm_feedback = 0; | |
757 | mutex_unlock(&audio->lock); | |
758 | return 0; | |
759 | } | |
760 | ||
761 | static int audqcelp_open(struct inode *inode, struct file *file) | |
762 | { | |
763 | struct audio *audio = &the_qcelp_audio; | |
764 | int rc; | |
765 | ||
766 | mutex_lock(&audio->lock); | |
767 | ||
768 | if (audio->opened) { | |
769 | pr_err("audio: busy\n"); | |
770 | rc = -EBUSY; | |
771 | goto done; | |
772 | } | |
773 | ||
774 | audio->data = dma_alloc_coherent(NULL, DMASZ, | |
775 | &audio->phys, GFP_KERNEL); | |
776 | if (!audio->data) { | |
777 | pr_err("audio: could not allocate DMA buffers\n"); | |
778 | rc = -ENOMEM; | |
779 | goto done; | |
780 | } | |
781 | ||
782 | rc = audmgr_open(&audio->audmgr); | |
783 | if (rc) | |
784 | goto err; | |
785 | ||
786 | rc = msm_adsp_get("AUDPLAY0TASK", &audio->audplay, | |
787 | &audplay_adsp_ops_qcelp, audio); | |
788 | if (rc) { | |
789 | pr_err("audio: failed to get audplay0 dsp module\n"); | |
790 | audmgr_close(&audio->audmgr); | |
791 | goto err; | |
792 | } | |
793 | ||
794 | audio->dec_id = 0; | |
795 | ||
796 | audio->out[0].data = audio->data + 0; | |
797 | audio->out[0].addr = audio->phys + 0; | |
798 | audio->out[0].size = BUFSZ; | |
799 | ||
800 | audio->out[1].data = audio->data + BUFSZ; | |
801 | audio->out[1].addr = audio->phys + BUFSZ; | |
802 | audio->out[1].size = BUFSZ; | |
803 | ||
804 | audio->volume = 0x2000; /* Q13 1.0 */ | |
805 | ||
806 | audqcelp_flush(audio); | |
807 | ||
808 | file->private_data = audio; | |
809 | audio->opened = 1; | |
810 | rc = 0; | |
811 | done: | |
812 | mutex_unlock(&audio->lock); | |
813 | return rc; | |
814 | err: | |
815 | dma_free_coherent(NULL, DMASZ, audio->data, audio->phys); | |
816 | mutex_unlock(&audio->lock); | |
817 | return rc; | |
818 | } | |
819 | ||
820 | static struct file_operations audio_qcelp_fops = { | |
821 | .owner = THIS_MODULE, | |
822 | .open = audqcelp_open, | |
823 | .release = audqcelp_release, | |
824 | .read = audqcelp_read, | |
825 | .write = audqcelp_write, | |
826 | .unlocked_ioctl = audqcelp_ioctl, | |
827 | }; | |
828 | ||
829 | struct miscdevice audio_qcelp_misc = { | |
830 | .minor = MISC_DYNAMIC_MINOR, | |
831 | .name = "msm_qcelp", | |
832 | .fops = &audio_qcelp_fops, | |
833 | }; | |
834 | ||
835 | static int __init audqcelp_init(void) | |
836 | { | |
837 | mutex_init(&the_qcelp_audio.lock); | |
838 | mutex_init(&the_qcelp_audio.write_lock); | |
839 | mutex_init(&the_qcelp_audio.read_lock); | |
840 | spin_lock_init(&the_qcelp_audio.dsp_lock); | |
841 | init_waitqueue_head(&the_qcelp_audio.write_wait); | |
842 | init_waitqueue_head(&the_qcelp_audio.read_wait); | |
843 | the_qcelp_audio.read_data = NULL; | |
844 | return misc_register(&audio_qcelp_misc); | |
845 | } | |
846 | ||
847 | static void __exit audqcelp_exit(void) | |
848 | { | |
849 | misc_deregister(&audio_qcelp_misc); | |
850 | } | |
851 | ||
852 | module_init(audqcelp_init); | |
853 | module_exit(audqcelp_exit); | |
854 | ||
855 | MODULE_DESCRIPTION("MSM QCELP 13K driver"); | |
856 | MODULE_LICENSE("GPL v2"); | |
857 | MODULE_AUTHOR("QUALCOMM"); |