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add releasepage hooks to block devices which can be used by file systems
[linux-2.6/mini2440.git] / sound / ppc / snd_ps3.c
blob8f9e3859c37ca70f802fdb5c3f8f25ed75731b8d
1 /*
2 * Audio support for PS3
3 * Copyright (C) 2007 Sony Computer Entertainment Inc.
4 * All rights reserved.
5 * Copyright 2006, 2007 Sony Corporation
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; version 2 of the Licence.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <linux/init.h>
22 #include <linux/slab.h>
23 #include <linux/io.h>
24 #include <linux/interrupt.h>
25 #include <sound/core.h>
26 #include <sound/initval.h>
27 #include <sound/pcm.h>
28 #include <sound/asound.h>
29 #include <sound/memalloc.h>
30 #include <sound/pcm_params.h>
31 #include <sound/control.h>
32 #include <linux/dmapool.h>
33 #include <linux/dma-mapping.h>
34 #include <asm/firmware.h>
35 #include <asm/dma.h>
36 #include <asm/lv1call.h>
37 #include <asm/ps3.h>
38 #include <asm/ps3av.h>
39
40 #include "snd_ps3_reg.h"
41 #include "snd_ps3.h"
42
43 MODULE_LICENSE("GPL v2");
44 MODULE_DESCRIPTION("PS3 sound driver");
45 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
46
47 /* module entries */
48 static int __init snd_ps3_init(void);
49 static void __exit snd_ps3_exit(void);
50
51 /* ALSA snd driver ops */
52 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream);
53 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream);
54 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream);
55 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
56 int cmd);
57 static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream
58 *substream);
59 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
60 struct snd_pcm_hw_params *hw_params);
61 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream);
62
63
64 /* ps3_system_bus_driver entries */
65 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev);
66 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev);
67
68 /* address setup */
69 static int snd_ps3_map_mmio(void);
70 static void snd_ps3_unmap_mmio(void);
71 static int snd_ps3_allocate_irq(void);
72 static void snd_ps3_free_irq(void);
73 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start);
74
75 /* interrupt handler */
76 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id);
77
78
79 /* set sampling rate/format */
80 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream);
81 /* take effect parameter change */
82 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card);
83 /* initialize avsetting and take it effect */
84 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card);
85 /* setup dma */
86 static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
87 enum snd_ps3_dma_filltype filltype);
88 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card);
89
90 static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch);
91
92
93 module_init(snd_ps3_init);
94 module_exit(snd_ps3_exit);
95
96 /*
97 * global
98 */
99 static struct snd_ps3_card_info the_card;
100
101 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY;
102
103 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644);
104 MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec");
105
106 static int index = SNDRV_DEFAULT_IDX1;
107 static char *id = SNDRV_DEFAULT_STR1;
108
109 module_param(index, int, 0444);
110 MODULE_PARM_DESC(index, "Index value for PS3 soundchip.");
111 module_param(id, charp, 0444);
112 MODULE_PARM_DESC(id, "ID string for PS3 soundchip.");
113
114
115 /*
116 * PS3 audio register access
117 */
118 static inline u32 read_reg(unsigned int reg)
119 {
120 return in_be32(the_card.mapped_mmio_vaddr + reg);
121 }
122 static inline void write_reg(unsigned int reg, u32 val)
123 {
124 out_be32(the_card.mapped_mmio_vaddr + reg, val);
125 }
126 static inline void update_reg(unsigned int reg, u32 or_val)
127 {
128 u32 newval = read_reg(reg) | or_val;
129 write_reg(reg, newval);
130 }
131 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val)
132 {
133 u32 newval = (read_reg(reg) & mask) | or_val;
134 write_reg(reg, newval);
135 }
136
137 /*
138 * ALSA defs
139 */
140 static const struct snd_pcm_hardware snd_ps3_pcm_hw = {
141 .info = (SNDRV_PCM_INFO_MMAP |
142 SNDRV_PCM_INFO_NONINTERLEAVED |
143 SNDRV_PCM_INFO_MMAP_VALID),
144 .formats = (SNDRV_PCM_FMTBIT_S16_BE |
145 SNDRV_PCM_FMTBIT_S24_BE),
146 .rates = (SNDRV_PCM_RATE_44100 |
147 SNDRV_PCM_RATE_48000 |
148 SNDRV_PCM_RATE_88200 |
149 SNDRV_PCM_RATE_96000),
150 .rate_min = 44100,
151 .rate_max = 96000,
152
153 .channels_min = 2, /* stereo only */
154 .channels_max = 2,
155
156 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64,
157
158 /* interrupt by four stages */
159 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
160 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
161
162 .periods_min = 16,
163 .periods_max = 32, /* buffer_size_max/ period_bytes_max */
164
165 .fifo_size = PS3_AUDIO_FIFO_SIZE
166 };
167
168 static struct snd_pcm_ops snd_ps3_pcm_spdif_ops =
169 {
170 .open = snd_ps3_pcm_open,
171 .close = snd_ps3_pcm_close,
172 .prepare = snd_ps3_pcm_prepare,
173 .ioctl = snd_pcm_lib_ioctl,
174 .trigger = snd_ps3_pcm_trigger,
175 .pointer = snd_ps3_pcm_pointer,
176 .hw_params = snd_ps3_pcm_hw_params,
177 .hw_free = snd_ps3_pcm_hw_free
178 };
179
180 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
181 int count, int force_stop)
182 {
183 int dma_ch, done, retries, stop_forced = 0;
184 uint32_t status;
185
186 for (dma_ch = 0; dma_ch < 8; dma_ch ++) {
187 retries = count;
188 do {
189 status = read_reg(PS3_AUDIO_KICK(dma_ch)) &
190 PS3_AUDIO_KICK_STATUS_MASK;
191 switch (status) {
192 case PS3_AUDIO_KICK_STATUS_DONE:
193 case PS3_AUDIO_KICK_STATUS_NOTIFY:
194 case PS3_AUDIO_KICK_STATUS_CLEAR:
195 case PS3_AUDIO_KICK_STATUS_ERROR:
196 done = 1;
197 break;
198 default:
199 done = 0;
200 udelay(10);
201 }
202 } while (!done && --retries);
203 if (!retries && force_stop) {
204 pr_info("%s: DMA ch %d is not stopped.",
205 __func__, dma_ch);
206 /* last resort. force to stop dma.
207 * NOTE: this cause DMA done interrupts
208 */
209 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR);
210 stop_forced = 1;
211 }
212 }
213 return stop_forced;
214 }
215
216 /*
217 * wait for all dma is done.
218 * NOTE: caller should reset card->running before call.
219 * If not, the interrupt handler will re-start DMA,
220 * then DMA is never stopped.
221 */
222 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card)
223 {
224 int stop_forced;
225 /*
226 * wait for the last dma is done
227 */
228
229 /*
230 * expected maximum DMA done time is 5.7ms + something (DMA itself).
231 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next
232 * DMA kick event would occur.
233 */
234 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1);
235
236 /*
237 * clear outstanding interrupts.
238 */
239 update_reg(PS3_AUDIO_INTR_0, 0);
240 update_reg(PS3_AUDIO_AX_IS, 0);
241
242 /*
243 *revert CLEAR bit since it will not reset automatically after DMA stop
244 */
245 if (stop_forced)
246 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0);
247 /* ensure the hardware sees changes */
248 wmb();
249 }
250
251 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card)
252 {
253
254 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST);
255 /* ensure the hardware sees the change */
256 wmb();
257 }
258
259 /*
260 * convert virtual addr to ioif bus addr.
261 */
262 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card,
263 void * paddr,
264 int ch)
265 {
266 return card->dma_start_bus_addr[ch] +
267 (paddr - card->dma_start_vaddr[ch]);
268 };
269
270
271 /*
272 * increment ring buffer pointer.
273 * NOTE: caller must hold write spinlock
274 */
275 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card,
276 enum snd_ps3_ch ch, size_t byte_count,
277 int stage)
278 {
279 if (!stage)
280 card->dma_last_transfer_vaddr[ch] =
281 card->dma_next_transfer_vaddr[ch];
282 card->dma_next_transfer_vaddr[ch] += byte_count;
283 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <=
284 card->dma_next_transfer_vaddr[ch]) {
285 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch];
286 }
287 }
288 /*
289 * setup dmac to send data to audio and attenuate samples on the ring buffer
290 */
291 static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
292 enum snd_ps3_dma_filltype filltype)
293 {
294 /* this dmac does not support over 4G */
295 uint32_t dma_addr;
296 int fill_stages, dma_ch, stage;
297 enum snd_ps3_ch ch;
298 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */
299 void *start_vaddr;
300 unsigned long irqsave;
301 int silent = 0;
302
303 switch (filltype) {
304 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL:
305 silent = 1;
306 /* intentionally fall thru */
307 case SND_PS3_DMA_FILLTYPE_FIRSTFILL:
308 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS;
309 break;
310
311 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING:
312 silent = 1;
313 /* intentionally fall thru */
314 case SND_PS3_DMA_FILLTYPE_RUNNING:
315 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY;
316 break;
317 }
318
319 snd_ps3_verify_dma_stop(card, 700, 0);
320 fill_stages = 4;
321 spin_lock_irqsave(&card->dma_lock, irqsave);
322 for (ch = 0; ch < 2; ch++) {
323 start_vaddr = card->dma_next_transfer_vaddr[0];
324 for (stage = 0; stage < fill_stages; stage ++) {
325 dma_ch = stage * 2 + ch;
326 if (silent)
327 dma_addr = card->null_buffer_start_dma_addr;
328 else
329 dma_addr =
330 v_to_bus(card,
331 card->dma_next_transfer_vaddr[ch],
332 ch);
333
334 write_reg(PS3_AUDIO_SOURCE(dma_ch),
335 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY |
336 dma_addr));
337
338 /* dst: fixed to 3wire#0 */
339 if (ch == 0)
340 write_reg(PS3_AUDIO_DEST(dma_ch),
341 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
342 PS3_AUDIO_AO_3W_LDATA(0)));
343 else
344 write_reg(PS3_AUDIO_DEST(dma_ch),
345 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
346 PS3_AUDIO_AO_3W_RDATA(0)));
347
348 /* count always 1 DMA block (1/2 stage = 128 bytes) */
349 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0);
350 /* bump pointer if needed */
351 if (!silent)
352 snd_ps3_bump_buffer(card, ch,
353 PS3_AUDIO_DMAC_BLOCK_SIZE,
354 stage);
355
356 /* kick event */
357 if (dma_ch == 0)
358 write_reg(PS3_AUDIO_KICK(dma_ch),
359 ch0_kick_event);
360 else
361 write_reg(PS3_AUDIO_KICK(dma_ch),
362 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch
363 - 1) |
364 PS3_AUDIO_KICK_REQUEST);
365 }
366 }
367 /* ensure the hardware sees the change */
368 wmb();
369 spin_unlock_irqrestore(&card->dma_lock, irqsave);
370
371 return 0;
372 }
373
374 /*
375 * audio mute on/off
376 * mute_on : 0 output enabled
377 * 1 mute
378 */
379 static int snd_ps3_mute(int mute_on)
380 {
381 return ps3av_audio_mute(mute_on);
382 }
383
384 /*
385 * PCM operators
386 */
387 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
388 {
389 struct snd_pcm_runtime *runtime = substream->runtime;
390 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
391 int pcm_index;
392
393 pcm_index = substream->pcm->device;
394 /* to retrieve substream/runtime in interrupt handler */
395 card->substream = substream;
396
397 runtime->hw = snd_ps3_pcm_hw;
398
399 card->start_delay = snd_ps3_start_delay;
400
401 /* mute off */
402 snd_ps3_mute(0); /* this function sleep */
403
404 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
405 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2);
406 return 0;
407 };
408
409 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
410 struct snd_pcm_hw_params *hw_params)
411 {
412 size_t size;
413
414 /* alloc transport buffer */
415 size = params_buffer_bytes(hw_params);
416 snd_pcm_lib_malloc_pages(substream, size);
417 return 0;
418 };
419
420 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
421 unsigned int delay_ms)
422 {
423 int ret;
424 int rate ;
425
426 rate = substream->runtime->rate;
427 ret = snd_pcm_format_size(substream->runtime->format,
428 rate * delay_ms / 1000)
429 * substream->runtime->channels;
430
431 pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n",
432 __func__,
433 delay_ms,
434 rate,
435 snd_pcm_format_size(substream->runtime->format, rate),
436 rate * delay_ms / 1000,
437 ret);
438
439 return ret;
440 };
441
442 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream)
443 {
444 struct snd_pcm_runtime *runtime = substream->runtime;
445 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
446 unsigned long irqsave;
447
448 if (!snd_ps3_set_avsetting(substream)) {
449 /* some parameter changed */
450 write_reg(PS3_AUDIO_AX_IE,
451 PS3_AUDIO_AX_IE_ASOBEIE(0) |
452 PS3_AUDIO_AX_IE_ASOBUIE(0));
453 /*
454 * let SPDIF device re-lock with SPDIF signal,
455 * start with some silence
456 */
457 card->silent = snd_ps3_delay_to_bytes(substream,
458 card->start_delay) /
459 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */
460 }
461
462 /* restart ring buffer pointer */
463 spin_lock_irqsave(&card->dma_lock, irqsave);
464 {
465 card->dma_buffer_size = runtime->dma_bytes;
466
467 card->dma_last_transfer_vaddr[SND_PS3_CH_L] =
468 card->dma_next_transfer_vaddr[SND_PS3_CH_L] =
469 card->dma_start_vaddr[SND_PS3_CH_L] =
470 runtime->dma_area;
471 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr;
472
473 card->dma_last_transfer_vaddr[SND_PS3_CH_R] =
474 card->dma_next_transfer_vaddr[SND_PS3_CH_R] =
475 card->dma_start_vaddr[SND_PS3_CH_R] =
476 runtime->dma_area + (runtime->dma_bytes / 2);
477 card->dma_start_bus_addr[SND_PS3_CH_R] =
478 runtime->dma_addr + (runtime->dma_bytes / 2);
479
480 pr_debug("%s: vaddr=%p bus=%#lx\n", __func__,
481 card->dma_start_vaddr[SND_PS3_CH_L],
482 card->dma_start_bus_addr[SND_PS3_CH_L]);
483
484 }
485 spin_unlock_irqrestore(&card->dma_lock, irqsave);
486
487 /* ensure the hardware sees the change */
488 mb();
489
490 return 0;
491 };
492
493 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
494 int cmd)
495 {
496 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
497 int ret = 0;
498
499 switch (cmd) {
500 case SNDRV_PCM_TRIGGER_START:
501 /* clear outstanding interrupts */
502 update_reg(PS3_AUDIO_AX_IS, 0);
503
504 spin_lock(&card->dma_lock);
505 {
506 card->running = 1;
507 }
508 spin_unlock(&card->dma_lock);
509
510 snd_ps3_program_dma(card,
511 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
512 snd_ps3_kick_dma(card);
513 while (read_reg(PS3_AUDIO_KICK(7)) &
514 PS3_AUDIO_KICK_STATUS_MASK) {
515 udelay(1);
516 }
517 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
518 snd_ps3_kick_dma(card);
519 break;
520
521 case SNDRV_PCM_TRIGGER_STOP:
522 spin_lock(&card->dma_lock);
523 {
524 card->running = 0;
525 }
526 spin_unlock(&card->dma_lock);
527 snd_ps3_wait_for_dma_stop(card);
528 break;
529 default:
530 break;
531
532 }
533
534 return ret;
535 };
536
537 /*
538 * report current pointer
539 */
540 static snd_pcm_uframes_t snd_ps3_pcm_pointer(
541 struct snd_pcm_substream *substream)
542 {
543 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
544 size_t bytes;
545 snd_pcm_uframes_t ret;
546
547 spin_lock(&card->dma_lock);
548 {
549 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] -
550 card->dma_start_vaddr[SND_PS3_CH_L]);
551 }
552 spin_unlock(&card->dma_lock);
553
554 ret = bytes_to_frames(substream->runtime, bytes * 2);
555
556 return ret;
557 };
558
559 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
560 {
561 int ret;
562 ret = snd_pcm_lib_free_pages(substream);
563 return ret;
564 };
565
566 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
567 {
568 /* mute on */
569 snd_ps3_mute(1);
570 return 0;
571 };
572
573 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
574 {
575 /*
576 * avsetting driver seems to never change the followings
577 * so, init them here once
578 */
579
580 /* no dma interrupt needed */
581 write_reg(PS3_AUDIO_INTR_EN_0, 0);
582
583 /* use every 4 buffer empty interrupt */
584 update_mask_reg(PS3_AUDIO_AX_IC,
585 PS3_AUDIO_AX_IC_AASOIMD_MASK,
586 PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
587
588 /* enable 3wire clocks */
589 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
590 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
591 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
592 0);
593 update_reg(PS3_AUDIO_AO_3WMCTRL,
594 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
595 }
596
597 /*
598 * av setting
599 * NOTE: calling this function may generate audio interrupt.
600 */
601 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
602 {
603 int ret, retries, i;
604 pr_debug("%s: start\n", __func__);
605
606 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
607 card->avs.avs_audio_rate,
608 card->avs.avs_audio_width,
609 card->avs.avs_audio_format,
610 card->avs.avs_audio_source);
611 /*
612 * Reset the following unwanted settings:
613 */
614
615 /* disable all 3wire buffers */
616 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
617 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
618 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
619 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
620 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
621 0);
622 wmb(); /* ensure the hardware sees the change */
623 /* wait for actually stopped */
624 retries = 1000;
625 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
626 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
627 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
628 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
629 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
630 --retries) {
631 udelay(1);
632 }
633
634 /* reset buffer pointer */
635 for (i = 0; i < 4; i++) {
636 update_reg(PS3_AUDIO_AO_3WCTRL(i),
637 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
638 udelay(10);
639 }
640 wmb(); /* ensure the hardware actually start resetting */
641
642 /* enable 3wire#0 buffer */
643 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
644
645
646 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
647 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
648 ~PS3_AUDIO_AO_3WCTRL_ASODF,
649 PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
650 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
651 ~PS3_AUDIO_AO_SPDCTRL_SPODF,
652 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
653 /* ensure all the setting above is written back to register */
654 wmb();
655 /* avsetting driver altered AX_IE, caller must reset it if you want */
656 pr_debug("%s: end\n", __func__);
657 return ret;
658 }
659
660 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
661 {
662 int ret;
663 pr_debug("%s: start\n", __func__);
664 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
665 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
666 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
667 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
668 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
669 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8);
670
671 ret = snd_ps3_change_avsetting(card);
672
673 snd_ps3_audio_fixup(card);
674
675 /* to start to generate SPDIF signal, fill data */
676 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
677 snd_ps3_kick_dma(card);
678 pr_debug("%s: end\n", __func__);
679 return ret;
680 }
681
682 /*
683 * set sampling rate according to the substream
684 */
685 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
686 {
687 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
688 struct snd_ps3_avsetting_info avs;
689 int ret;
690
691 avs = card->avs;
692
693 pr_debug("%s: called freq=%d width=%d\n", __func__,
694 substream->runtime->rate,
695 snd_pcm_format_width(substream->runtime->format));
696
697 pr_debug("%s: before freq=%d width=%d\n", __func__,
698 card->avs.avs_audio_rate, card->avs.avs_audio_width);
699
700 /* sample rate */
701 switch (substream->runtime->rate) {
702 case 44100:
703 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
704 break;
705 case 48000:
706 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
707 break;
708 case 88200:
709 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
710 break;
711 case 96000:
712 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
713 break;
714 default:
715 pr_info("%s: invalid rate %d\n", __func__,
716 substream->runtime->rate);
717 return 1;
718 }
719
720 /* width */
721 switch (snd_pcm_format_width(substream->runtime->format)) {
722 case 16:
723 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
724 break;
725 case 24:
726 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
727 break;
728 default:
729 pr_info("%s: invalid width %d\n", __func__,
730 snd_pcm_format_width(substream->runtime->format));
731 return 1;
732 }
733
734 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8);
735
736 if (memcmp(&card->avs, &avs, sizeof(avs))) {
737 pr_debug("%s: after freq=%d width=%d\n", __func__,
738 card->avs.avs_audio_rate, card->avs.avs_audio_width);
739
740 card->avs = avs;
741 snd_ps3_change_avsetting(card);
742 ret = 0;
743 } else
744 ret = 1;
745
746 /* check CS non-audio bit and mute accordingly */
747 if (avs.avs_cs_info[0] & 0x02)
748 ps3av_audio_mute_analog(1); /* mute if non-audio */
749 else
750 ps3av_audio_mute_analog(0);
751
752 return ret;
753 }
754
755 /*
756 * SPDIF status bits controls
757 */
758 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol,
759 struct snd_ctl_elem_info *uinfo)
760 {
761 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
762 uinfo->count = 1;
763 return 0;
764 }
765
766 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */
767 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol,
768 struct snd_ctl_elem_value *ucontrol)
769 {
770 memset(ucontrol->value.iec958.status, 0xff, 8);
771 return 0;
772 }
773
774 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol,
775 struct snd_ctl_elem_value *ucontrol)
776 {
777 return 0;
778 }
779
780 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol,
781 struct snd_ctl_elem_value *ucontrol)
782 {
783 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8);
784 return 0;
785 }
786
787 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol,
788 struct snd_ctl_elem_value *ucontrol)
789 {
790 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) {
791 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8);
792 return 1;
793 }
794 return 0;
795 }
796
797 static struct snd_kcontrol_new spdif_ctls[] = {
798 {
799 .access = SNDRV_CTL_ELEM_ACCESS_READ,
800 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
801 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
802 .info = snd_ps3_spdif_mask_info,
803 .get = snd_ps3_spdif_cmask_get,
804 },
805 {
806 .access = SNDRV_CTL_ELEM_ACCESS_READ,
807 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
808 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
809 .info = snd_ps3_spdif_mask_info,
810 .get = snd_ps3_spdif_pmask_get,
811 },
812 {
813 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
814 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
815 .info = snd_ps3_spdif_mask_info,
816 .get = snd_ps3_spdif_default_get,
817 .put = snd_ps3_spdif_default_put,
818 },
819 };
820
821
822 static int snd_ps3_map_mmio(void)
823 {
824 the_card.mapped_mmio_vaddr =
825 ioremap(the_card.ps3_dev->m_region->bus_addr,
826 the_card.ps3_dev->m_region->len);
827
828 if (!the_card.mapped_mmio_vaddr) {
829 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
830 __func__, the_card.ps3_dev->m_region->lpar_addr,
831 the_card.ps3_dev->m_region->len);
832 return -ENXIO;
833 }
834
835 return 0;
836 };
837
838 static void snd_ps3_unmap_mmio(void)
839 {
840 iounmap(the_card.mapped_mmio_vaddr);
841 the_card.mapped_mmio_vaddr = NULL;
842 }
843
844 static int snd_ps3_allocate_irq(void)
845 {
846 int ret;
847 u64 lpar_addr, lpar_size;
848 u64 __iomem *mapped;
849
850 /* FIXME: move this to device_init (H/W probe) */
851
852 /* get irq outlet */
853 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
854 if (ret) {
855 pr_info("%s: device map 1 failed %d\n", __func__,
856 ret);
857 return -ENXIO;
858 }
859
860 mapped = ioremap(lpar_addr, lpar_size);
861 if (!mapped) {
862 pr_info("%s: ioremap 1 failed \n", __func__);
863 return -ENXIO;
864 }
865
866 the_card.audio_irq_outlet = in_be64(mapped);
867
868 iounmap(mapped);
869 ret = lv1_gpu_device_unmap(1);
870 if (ret)
871 pr_info("%s: unmap 1 failed\n", __func__);
872
873 /* irq */
874 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
875 the_card.audio_irq_outlet,
876 &the_card.irq_no);
877 if (ret) {
878 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
879 return ret;
880 }
881
882 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
883 SND_PS3_DRIVER_NAME, &the_card);
884 if (ret) {
885 pr_info("%s: request_irq failed (%d)\n", __func__, ret);
886 goto cleanup_irq;
887 }
888
889 return 0;
890
891 cleanup_irq:
892 ps3_irq_plug_destroy(the_card.irq_no);
893 return ret;
894 };
895
896 static void snd_ps3_free_irq(void)
897 {
898 free_irq(the_card.irq_no, &the_card);
899 ps3_irq_plug_destroy(the_card.irq_no);
900 }
901
902 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
903 {
904 uint64_t val;
905 int ret;
906
907 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
908 (0x03UL << 24) |
909 (0x0fUL << 12) |
910 (PS3_AUDIO_IOID);
911
912 ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);
913 if (ret)
914 pr_info("%s: gpu_attribute failed %d\n", __func__,
915 ret);
916 }
917
918 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
919 {
920 int i, ret;
921 u64 lpar_addr, lpar_size;
922
923 BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1));
924 BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND);
925
926 the_card.ps3_dev = dev;
927
928 ret = ps3_open_hv_device(dev);
929
930 if (ret)
931 return -ENXIO;
932
933 /* setup MMIO */
934 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
935 if (ret) {
936 pr_info("%s: device map 2 failed %d\n", __func__, ret);
937 goto clean_open;
938 }
939 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
940 PAGE_SHIFT);
941
942 ret = snd_ps3_map_mmio();
943 if (ret)
944 goto clean_dev_map;
945
946 /* setup DMA area */
947 ps3_dma_region_init(dev, dev->d_region,
948 PAGE_SHIFT, /* use system page size */
949 0, /* dma type; not used */
950 NULL,
951 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
952 dev->d_region->ioid = PS3_AUDIO_IOID;
953
954 ret = ps3_dma_region_create(dev->d_region);
955 if (ret) {
956 pr_info("%s: region_create\n", __func__);
957 goto clean_mmio;
958 }
959
960 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
961
962 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */
963 the_card.start_delay = snd_ps3_start_delay;
964
965 /* irq */
966 if (snd_ps3_allocate_irq()) {
967 ret = -ENXIO;
968 goto clean_dma_region;
969 }
970
971 /* create card instance */
972 the_card.card = snd_card_new(index, id, THIS_MODULE, 0);
973 if (!the_card.card) {
974 ret = -ENXIO;
975 goto clean_irq;
976 }
977
978 strcpy(the_card.card->driver, "PS3");
979 strcpy(the_card.card->shortname, "PS3");
980 strcpy(the_card.card->longname, "PS3 sound");
981
982 /* create control elements */
983 for (i = 0; i < ARRAY_SIZE(spdif_ctls); i++) {
984 ret = snd_ctl_add(the_card.card,
985 snd_ctl_new1(&spdif_ctls[i], &the_card));
986 if (ret < 0)
987 goto clean_card;
988 }
989
990 /* create PCM devices instance */
991 /* NOTE:this driver works assuming pcm:substream = 1:1 */
992 ret = snd_pcm_new(the_card.card,
993 "SPDIF",
994 0, /* instance index, will be stored pcm.device*/
995 1, /* output substream */
996 0, /* input substream */
997 &(the_card.pcm));
998 if (ret)
999 goto clean_card;
1000
1001 the_card.pcm->private_data = &the_card;
1002 strcpy(the_card.pcm->name, "SPDIF");
1003
1004 /* set pcm ops */
1005 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
1006 &snd_ps3_pcm_spdif_ops);
1007
1008 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
1009 /* pre-alloc PCM DMA buffer*/
1010 ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
1011 SNDRV_DMA_TYPE_DEV,
1012 &dev->core,
1013 SND_PS3_PCM_PREALLOC_SIZE,
1014 SND_PS3_PCM_PREALLOC_SIZE);
1015 if (ret < 0) {
1016 pr_info("%s: prealloc failed\n", __func__);
1017 goto clean_card;
1018 }
1019
1020 /*
1021 * allocate null buffer
1022 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
1023 * PAGE_SIZE is enogh
1024 */
1025 if (!(the_card.null_buffer_start_vaddr =
1026 dma_alloc_coherent(&the_card.ps3_dev->core,
1027 PAGE_SIZE,
1028 &the_card.null_buffer_start_dma_addr,
1029 GFP_KERNEL))) {
1030 pr_info("%s: nullbuffer alloc failed\n", __func__);
1031 goto clean_preallocate;
1032 }
1033 pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__,
1034 the_card.null_buffer_start_vaddr,
1035 the_card.null_buffer_start_dma_addr);
1036 /* set default sample rate/word width */
1037 snd_ps3_init_avsetting(&the_card);
1038
1039 /* register the card */
1040 snd_card_set_dev(the_card.card, &dev->core);
1041 ret = snd_card_register(the_card.card);
1042 if (ret < 0)
1043 goto clean_dma_map;
1044
1045 pr_info("%s started. start_delay=%dms\n",
1046 the_card.card->longname, the_card.start_delay);
1047 return 0;
1048
1049 clean_dma_map:
1050 dma_free_coherent(&the_card.ps3_dev->core,
1051 PAGE_SIZE,
1052 the_card.null_buffer_start_vaddr,
1053 the_card.null_buffer_start_dma_addr);
1054 clean_preallocate:
1055 snd_pcm_lib_preallocate_free_for_all(the_card.pcm);
1056 clean_card:
1057 snd_card_free(the_card.card);
1058 clean_irq:
1059 snd_ps3_free_irq();
1060 clean_dma_region:
1061 ps3_dma_region_free(dev->d_region);
1062 clean_mmio:
1063 snd_ps3_unmap_mmio();
1064 clean_dev_map:
1065 lv1_gpu_device_unmap(2);
1066 clean_open:
1067 ps3_close_hv_device(dev);
1068 /*
1069 * there is no destructor function to pcm.
1070 * midlayer automatically releases if the card removed
1071 */
1072 return ret;
1073 }; /* snd_ps3_probe */
1074
1075 /* called when module removal */
1076 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev)
1077 {
1078 int ret;
1079 pr_info("%s:start id=%d\n", __func__, dev->match_id);
1080 if (dev->match_id != PS3_MATCH_ID_SOUND)
1081 return -ENXIO;
1082
1083 /*
1084 * ctl and preallocate buffer will be freed in
1085 * snd_card_free
1086 */
1087 ret = snd_card_free(the_card.card);
1088 if (ret)
1089 pr_info("%s: ctl freecard=%d\n", __func__, ret);
1090
1091 dma_free_coherent(&dev->core,
1092 PAGE_SIZE,
1093 the_card.null_buffer_start_vaddr,
1094 the_card.null_buffer_start_dma_addr);
1095
1096 ps3_dma_region_free(dev->d_region);
1097
1098 snd_ps3_free_irq();
1099 snd_ps3_unmap_mmio();
1100
1101 lv1_gpu_device_unmap(2);
1102 ps3_close_hv_device(dev);
1103 pr_info("%s:end id=%d\n", __func__, dev->match_id);
1104 return 0;
1105 } /* snd_ps3_remove */
1106
1107 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = {
1108 .match_id = PS3_MATCH_ID_SOUND,
1109 .probe = snd_ps3_driver_probe,
1110 .remove = snd_ps3_driver_remove,
1111 .shutdown = snd_ps3_driver_remove,
1112 .core = {
1113 .name = SND_PS3_DRIVER_NAME,
1114 .owner = THIS_MODULE,
1115 },
1116 };
1117
1118
1119 /*
1120 * Interrupt handler
1121 */
1122 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
1123 {
1124
1125 uint32_t port_intr;
1126 int underflow_occured = 0;
1127 struct snd_ps3_card_info *card = dev_id;
1128
1129 if (!card->running) {
1130 update_reg(PS3_AUDIO_AX_IS, 0);
1131 update_reg(PS3_AUDIO_INTR_0, 0);
1132 return IRQ_HANDLED;
1133 }
1134
1135 port_intr = read_reg(PS3_AUDIO_AX_IS);
1136 /*
1137 *serial buffer empty detected (every 4 times),
1138 *program next dma and kick it
1139 */
1140 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
1141 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
1142 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1143 write_reg(PS3_AUDIO_AX_IS, port_intr);
1144 underflow_occured = 1;
1145 }
1146 if (card->silent) {
1147 /* we are still in silent time */
1148 snd_ps3_program_dma(card,
1149 (underflow_occured) ?
1150 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
1151 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
1152 snd_ps3_kick_dma(card);
1153 card->silent --;
1154 } else {
1155 snd_ps3_program_dma(card,
1156 (underflow_occured) ?
1157 SND_PS3_DMA_FILLTYPE_FIRSTFILL :
1158 SND_PS3_DMA_FILLTYPE_RUNNING);
1159 snd_ps3_kick_dma(card);
1160 snd_pcm_period_elapsed(card->substream);
1161 }
1162 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1163 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
1164 /*
1165 * serial out underflow, but buffer empty not detected.
1166 * in this case, fill fifo with 0 to recover. After
1167 * filling dummy data, serial automatically start to
1168 * consume them and then will generate normal buffer
1169 * empty interrupts.
1170 * If both buffer underflow and buffer empty are occured,
1171 * it is better to do nomal data transfer than empty one
1172 */
1173 snd_ps3_program_dma(card,
1174 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1175 snd_ps3_kick_dma(card);
1176 snd_ps3_program_dma(card,
1177 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1178 snd_ps3_kick_dma(card);
1179 }
1180 /* clear interrupt cause */
1181 return IRQ_HANDLED;
1182 };
1183
1184 /*
1185 * module/subsystem initialize/terminate
1186 */
1187 static int __init snd_ps3_init(void)
1188 {
1189 int ret;
1190
1191 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
1192 return -ENXIO;
1193
1194 memset(&the_card, 0, sizeof(the_card));
1195 spin_lock_init(&the_card.dma_lock);
1196
1197 /* register systembus DRIVER, this calls our probe() func */
1198 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info);
1199
1200 return ret;
1201 }
1202
1203 static void __exit snd_ps3_exit(void)
1204 {
1205 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
1206 }
1207
1208 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);
Support for the Chinese Samsung S3C2440 based development boards