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authorMasakazu Mokuno <mokuno@sm.sony.co.jp>2007-07-03 06:54:49 -0400
committerJaroslav Kysela <perex@suse.cz>2007-07-20 05:11:40 -0400
commitc454fd4e888dc2b1423b6a65106a619e99a2deb4 (patch)
tree23b7b38c0990de70e3d029eef14d30243f7afaa5 /sound/ppc/snd_ps3.c
parent87823090a8bd373f34bdb6f1d5cdc5f2f4da4905 (diff)
[ALSA] Add PS3 sound driver
The patch adds the support for the sound feature of PS3 - the digital output of HDMI and SPDIF optical, and the analog output of AV multi. Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/ppc/snd_ps3.c')
-rw-r--r--sound/ppc/snd_ps3.c1125
1 files changed, 1125 insertions, 0 deletions
diff --git a/sound/ppc/snd_ps3.c b/sound/ppc/snd_ps3.c
new file mode 100644
index 000000000000..1aa0b467599f
--- /dev/null
+++ b/sound/ppc/snd_ps3.c
@@ -0,0 +1,1125 @@
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/driver.h>
26#include <sound/core.h>
27#include <sound/initval.h>
28#include <sound/pcm.h>
29#include <sound/asound.h>
30#include <sound/memalloc.h>
31#include <sound/pcm_params.h>
32#include <sound/control.h>
33#include <linux/dmapool.h>
34#include <linux/dma-mapping.h>
35#include <asm/firmware.h>
36#include <linux/io.h>
37#include <asm/dma.h>
38#include <asm/lv1call.h>
39#include <asm/ps3.h>
40#include <asm/ps3av.h>
41
42#include "snd_ps3_reg.h"
43#include "snd_ps3.h"
44
45MODULE_LICENSE("GPL v2");
46MODULE_DESCRIPTION("PS3 sound driver");
47MODULE_AUTHOR("Sony Computer Entertainment Inc.");
48
49/* module entries */
50static int __init snd_ps3_init(void);
51static void __exit snd_ps3_exit(void);
52
53/* ALSA snd driver ops */
54static int snd_ps3_pcm_open(struct snd_pcm_substream *substream);
55static int snd_ps3_pcm_close(struct snd_pcm_substream *substream);
56static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream);
57static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
58 int cmd);
59static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream
60 *substream);
61static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
62 struct snd_pcm_hw_params *hw_params);
63static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream);
64
65
66/* ps3_system_bus_driver entries */
67static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev);
68static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev);
69
70/* address setup */
71static int snd_ps3_map_mmio(void);
72static void snd_ps3_unmap_mmio(void);
73static int snd_ps3_allocate_irq(void);
74static void snd_ps3_free_irq(void);
75static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start);
76
77/* interrupt handler */
78static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id);
79
80
81/* set sampling rate/format */
82static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream);
83/* take effect parameter change */
84static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card);
85/* initialize avsetting and take it effect */
86static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card);
87/* setup dma */
88static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
89 enum snd_ps3_dma_filltype filltype);
90static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card);
91
92static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void *vaddr, int ch);
93
94
95module_init(snd_ps3_init);
96module_exit(snd_ps3_exit);
97
98/*
99 * global
100 */
101static struct snd_ps3_card_info the_card;
102
103static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY;
104
105module_param_named(start_delay, snd_ps3_start_delay, uint, 0644);
106MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec");
107
108static int index = SNDRV_DEFAULT_IDX1;
109static char *id = SNDRV_DEFAULT_STR1;
110
111module_param(index, int, 0444);
112MODULE_PARM_DESC(index, "Index value for PS3 soundchip.");
113module_param(id, charp, 0444);
114MODULE_PARM_DESC(id, "ID string for PS3 soundchip.");
115
116
117/*
118 * PS3 audio register access
119 */
120static inline u32 read_reg(unsigned int reg)
121{
122 return in_be32(the_card.mapped_mmio_vaddr + reg);
123}
124static inline void write_reg(unsigned int reg, u32 val)
125{
126 out_be32(the_card.mapped_mmio_vaddr + reg, val);
127}
128static inline void update_reg(unsigned int reg, u32 or_val)
129{
130 u32 newval = read_reg(reg) | or_val;
131 write_reg(reg, newval);
132}
133static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val)
134{
135 u32 newval = (read_reg(reg) & mask) | or_val;
136 write_reg(reg, newval);
137}
138
139/*
140 * ALSA defs
141 */
142const static struct snd_pcm_hardware snd_ps3_pcm_hw = {
143 .info = (SNDRV_PCM_INFO_MMAP |
144 SNDRV_PCM_INFO_NONINTERLEAVED |
145 SNDRV_PCM_INFO_MMAP_VALID),
146 .formats = (SNDRV_PCM_FMTBIT_S16_BE |
147 SNDRV_PCM_FMTBIT_S24_BE),
148 .rates = (SNDRV_PCM_RATE_44100 |
149 SNDRV_PCM_RATE_48000 |
150 SNDRV_PCM_RATE_88200 |
151 SNDRV_PCM_RATE_96000),
152 .rate_min = 44100,
153 .rate_max = 96000,
154
155 .channels_min = 2, /* stereo only */
156 .channels_max = 2,
157
158 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64,
159
160 /* interrupt by four stages */
161 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
162 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
163
164 .periods_min = 16,
165 .periods_max = 32, /* buffer_size_max/ period_bytes_max */
166
167 .fifo_size = PS3_AUDIO_FIFO_SIZE
168};
169
170static struct snd_pcm_ops snd_ps3_pcm_spdif_ops =
171{
172 .open = snd_ps3_pcm_open,
173 .close = snd_ps3_pcm_close,
174 .prepare = snd_ps3_pcm_prepare,
175 .ioctl = snd_pcm_lib_ioctl,
176 .trigger = snd_ps3_pcm_trigger,
177 .pointer = snd_ps3_pcm_pointer,
178 .hw_params = snd_ps3_pcm_hw_params,
179 .hw_free = snd_ps3_pcm_hw_free
180};
181
182static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
183 int count, int force_stop)
184{
185 int dma_ch, done, retries, stop_forced = 0;
186 uint32_t status;
187
188 for (dma_ch = 0; dma_ch < 8; dma_ch ++) {
189 retries = count;
190 do {
191 status = read_reg(PS3_AUDIO_KICK(dma_ch)) &
192 PS3_AUDIO_KICK_STATUS_MASK;
193 switch (status) {
194 case PS3_AUDIO_KICK_STATUS_DONE:
195 case PS3_AUDIO_KICK_STATUS_NOTIFY:
196 case PS3_AUDIO_KICK_STATUS_CLEAR:
197 case PS3_AUDIO_KICK_STATUS_ERROR:
198 done = 1;
199 break;
200 default:
201 done = 0;
202 udelay(10);
203 }
204 } while (!done && --retries);
205 if (!retries && force_stop) {
206 pr_info("%s: DMA ch %d is not stopped.",
207 __func__, dma_ch);
208 /* last resort. force to stop dma.
209 * NOTE: this cause DMA done interrupts
210 */
211 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR);
212 stop_forced = 1;
213 }
214 }
215 return stop_forced;
216}
217
218/*
219 * wait for all dma is done.
220 * NOTE: caller should reset card->running before call.
221 * If not, the interrupt handler will re-start DMA,
222 * then DMA is never stopped.
223 */
224static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card)
225{
226 int stop_forced;
227 /*
228 * wait for the last dma is done
229 */
230
231 /*
232 * expected maximum DMA done time is 5.7ms + something (DMA itself).
233 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next
234 * DMA kick event would occur.
235 */
236 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1);
237
238 /*
239 * clear outstanding interrupts.
240 */
241 update_reg(PS3_AUDIO_INTR_0, 0);
242 update_reg(PS3_AUDIO_AX_IS, 0);
243
244 /*
245 *revert CLEAR bit since it will not reset automatically after DMA stop
246 */
247 if (stop_forced)
248 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0);
249 /* ensure the hardware sees changes */
250 wmb();
251}
252
253static void snd_ps3_kick_dma(struct snd_ps3_card_info *card)
254{
255
256 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST);
257 /* ensure the hardware sees the change */
258 wmb();
259}
260
261/*
262 * convert virtual addr to ioif bus addr.
263 */
264static dma_addr_t v_to_bus(struct snd_ps3_card_info *card,
265 void * paddr,
266 int ch)
267{
268 return card->dma_start_bus_addr[ch] +
269 (paddr - card->dma_start_vaddr[ch]);
270};
271
272
273/*
274 * increment ring buffer pointer.
275 * NOTE: caller must hold write spinlock
276 */
277static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card,
278 enum snd_ps3_ch ch, size_t byte_count,
279 int stage)
280{
281 if (!stage)
282 card->dma_last_transfer_vaddr[ch] =
283 card->dma_next_transfer_vaddr[ch];
284 card->dma_next_transfer_vaddr[ch] += byte_count;
285 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <=
286 card->dma_next_transfer_vaddr[ch]) {
287 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch];
288 }
289}
290/*
291 * setup dmac to send data to audio and attenuate samples on the ring buffer
292 */
293static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
294 enum snd_ps3_dma_filltype filltype)
295{
296 /* this dmac does not support over 4G */
297 uint32_t dma_addr;
298 int fill_stages, dma_ch, stage;
299 enum snd_ps3_ch ch;
300 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */
301 void *start_vaddr;
302 unsigned long irqsave;
303 int silent = 0;
304
305 switch (filltype) {
306 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL:
307 silent = 1;
308 /* intentionally fall thru */
309 case SND_PS3_DMA_FILLTYPE_FIRSTFILL:
310 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS;
311 break;
312
313 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING:
314 silent = 1;
315 /* intentionally fall thru */
316 case SND_PS3_DMA_FILLTYPE_RUNNING:
317 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY;
318 break;
319 }
320
321 snd_ps3_verify_dma_stop(card, 700, 0);
322 fill_stages = 4;
323 spin_lock_irqsave(&card->dma_lock, irqsave);
324 for (ch = 0; ch < 2; ch++) {
325 start_vaddr = card->dma_next_transfer_vaddr[0];
326 for (stage = 0; stage < fill_stages; stage ++) {
327 dma_ch = stage * 2 + ch;
328 if (silent)
329 dma_addr = card->null_buffer_start_dma_addr;
330 else
331 dma_addr =
332 v_to_bus(card,
333 card->dma_next_transfer_vaddr[ch],
334 ch);
335
336 write_reg(PS3_AUDIO_SOURCE(dma_ch),
337 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY |
338 dma_addr));
339
340 /* dst: fixed to 3wire#0 */
341 if (ch == 0)
342 write_reg(PS3_AUDIO_DEST(dma_ch),
343 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
344 PS3_AUDIO_AO_3W_LDATA(0)));
345 else
346 write_reg(PS3_AUDIO_DEST(dma_ch),
347 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
348 PS3_AUDIO_AO_3W_RDATA(0)));
349
350 /* count always 1 DMA block (1/2 stage = 128 bytes) */
351 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0);
352 /* bump pointer if needed */
353 if (!silent)
354 snd_ps3_bump_buffer(card, ch,
355 PS3_AUDIO_DMAC_BLOCK_SIZE,
356 stage);
357
358 /* kick event */
359 if (dma_ch == 0)
360 write_reg(PS3_AUDIO_KICK(dma_ch),
361 ch0_kick_event);
362 else
363 write_reg(PS3_AUDIO_KICK(dma_ch),
364 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch
365 - 1) |
366 PS3_AUDIO_KICK_REQUEST);
367 }
368 }
369 /* ensure the hardware sees the change */
370 wmb();
371 spin_unlock_irqrestore(&card->dma_lock, irqsave);
372
373 return 0;
374}
375
376/*
377 * audio mute on/off
378 * mute_on : 0 output enabled
379 * 1 mute
380 */
381static int snd_ps3_mute(int mute_on)
382{
383 return ps3av_audio_mute(mute_on);
384}
385
386/*
387 * PCM operators
388 */
389static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
390{
391 struct snd_pcm_runtime *runtime = substream->runtime;
392 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
393 int pcm_index;
394
395 pcm_index = substream->pcm->device;
396 /* to retrieve substream/runtime in interrupt handler */
397 card->substream = substream;
398
399 runtime->hw = snd_ps3_pcm_hw;
400
401 card->start_delay = snd_ps3_start_delay;
402
403 /* mute off */
404 snd_ps3_mute(0); /* this function sleep */
405
406 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
407 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2);
408 return 0;
409};
410
411static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
412 struct snd_pcm_hw_params *hw_params)
413{
414 size_t size;
415
416 /* alloc transport buffer */
417 size = params_buffer_bytes(hw_params);
418 snd_pcm_lib_malloc_pages(substream, size);
419 return 0;
420};
421
422static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
423 unsigned int delay_ms)
424{
425 int ret;
426 int rate ;
427
428 rate = substream->runtime->rate;
429 ret = snd_pcm_format_size(substream->runtime->format,
430 rate * delay_ms / 1000)
431 * substream->runtime->channels;
432
433 pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n",
434 __func__,
435 delay_ms,
436 rate,
437 snd_pcm_format_size(substream->runtime->format, rate),
438 rate * delay_ms / 1000,
439 ret);
440
441 return ret;
442};
443
444static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream)
445{
446 struct snd_pcm_runtime *runtime = substream->runtime;
447 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
448 unsigned long irqsave;
449
450 if (!snd_ps3_set_avsetting(substream)) {
451 /* some parameter changed */
452 write_reg(PS3_AUDIO_AX_IE,
453 PS3_AUDIO_AX_IE_ASOBEIE(0) |
454 PS3_AUDIO_AX_IE_ASOBUIE(0));
455 /*
456 * let SPDIF device re-lock with SPDIF signal,
457 * start with some silence
458 */
459 card->silent = snd_ps3_delay_to_bytes(substream,
460 card->start_delay) /
461 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */
462 }
463
464 /* restart ring buffer pointer */
465 spin_lock_irqsave(&card->dma_lock, irqsave);
466 {
467 card->dma_buffer_size = runtime->dma_bytes;
468
469 card->dma_last_transfer_vaddr[SND_PS3_CH_L] =
470 card->dma_next_transfer_vaddr[SND_PS3_CH_L] =
471 card->dma_start_vaddr[SND_PS3_CH_L] =
472 runtime->dma_area;
473 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr;
474
475 card->dma_last_transfer_vaddr[SND_PS3_CH_R] =
476 card->dma_next_transfer_vaddr[SND_PS3_CH_R] =
477 card->dma_start_vaddr[SND_PS3_CH_R] =
478 runtime->dma_area + (runtime->dma_bytes / 2);
479 card->dma_start_bus_addr[SND_PS3_CH_R] =
480 runtime->dma_addr + (runtime->dma_bytes / 2);
481
482 pr_debug("%s: vaddr=%p bus=%#lx\n", __func__,
483 card->dma_start_vaddr[SND_PS3_CH_L],
484 card->dma_start_bus_addr[SND_PS3_CH_L]);
485
486 }
487 spin_unlock_irqrestore(&card->dma_lock, irqsave);
488
489 /* ensure the hardware sees the change */
490 mb();
491
492 return 0;
493};
494
495static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
496 int cmd)
497{
498 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
499 int ret = 0;
500
501 switch (cmd) {
502 case SNDRV_PCM_TRIGGER_START:
503 /* clear outstanding interrupts */
504 update_reg(PS3_AUDIO_AX_IS, 0);
505
506 spin_lock(&card->dma_lock);
507 {
508 card->running = 1;
509 }
510 spin_unlock(&card->dma_lock);
511
512 snd_ps3_program_dma(card,
513 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
514 snd_ps3_kick_dma(card);
515 while (read_reg(PS3_AUDIO_KICK(7)) &
516 PS3_AUDIO_KICK_STATUS_MASK) {
517 udelay(1);
518 }
519 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
520 snd_ps3_kick_dma(card);
521 break;
522
523 case SNDRV_PCM_TRIGGER_STOP:
524 spin_lock(&card->dma_lock);
525 {
526 card->running = 0;
527 }
528 spin_unlock(&card->dma_lock);
529 snd_ps3_wait_for_dma_stop(card);
530 break;
531 default:
532 break;
533
534 }
535
536 return ret;
537};
538
539/*
540 * report current pointer
541 */
542static snd_pcm_uframes_t snd_ps3_pcm_pointer(
543 struct snd_pcm_substream *substream)
544{
545 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
546 size_t bytes;
547 snd_pcm_uframes_t ret;
548
549 spin_lock(&card->dma_lock);
550 {
551 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] -
552 card->dma_start_vaddr[SND_PS3_CH_L]);
553 }
554 spin_unlock(&card->dma_lock);
555
556 ret = bytes_to_frames(substream->runtime, bytes * 2);
557
558 return ret;
559};
560
561static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
562{
563 int ret;
564 ret = snd_pcm_lib_free_pages(substream);
565 return ret;
566};
567
568static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
569{
570 /* mute on */
571 snd_ps3_mute(1);
572 return 0;
573};
574
575static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
576{
577 /*
578 * avsetting driver seems to never change the followings
579 * so, init them here once
580 */
581
582 /* no dma interrupt needed */
583 write_reg(PS3_AUDIO_INTR_EN_0, 0);
584
585 /* use every 4 buffer empty interrupt */
586 update_mask_reg(PS3_AUDIO_AX_IC,
587 PS3_AUDIO_AX_IC_AASOIMD_MASK,
588 PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
589
590 /* enable 3wire clocks */
591 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
592 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
593 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
594 0);
595 update_reg(PS3_AUDIO_AO_3WMCTRL,
596 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
597}
598
599/*
600 * av setting
601 * NOTE: calling this function may generate audio interrupt.
602 */
603static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
604{
605 int ret, retries, i;
606 pr_debug("%s: start\n", __func__);
607
608 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
609 card->avs.avs_audio_rate,
610 card->avs.avs_audio_width,
611 card->avs.avs_audio_format,
612 card->avs.avs_audio_source);
613 /*
614 * Reset the following unwanted settings:
615 */
616
617 /* disable all 3wire buffers */
618 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
619 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
620 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
621 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
622 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
623 0);
624 wmb(); /* ensure the hardware sees the change */
625 /* wait for actually stopped */
626 retries = 1000;
627 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
628 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
629 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
630 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
631 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
632 --retries) {
633 udelay(1);
634 }
635
636 /* reset buffer pointer */
637 for (i = 0; i < 4; i++) {
638 update_reg(PS3_AUDIO_AO_3WCTRL(i),
639 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
640 udelay(10);
641 }
642 wmb(); /* ensure the hardware actually start resetting */
643
644 /* enable 3wire#0 buffer */
645 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
646
647
648 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
649 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
650 ~PS3_AUDIO_AO_3WCTRL_ASODF,
651 PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
652 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
653 ~PS3_AUDIO_AO_SPDCTRL_SPODF,
654 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
655 /* ensure all the setting above is written back to register */
656 wmb();
657 /* avsetting driver altered AX_IE, caller must reset it if you want */
658 pr_debug("%s: end\n", __func__);
659 return ret;
660}
661
662static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
663{
664 int ret;
665 pr_debug("%s: start\n", __func__);
666 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
667 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
668 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
669 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
670 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
671
672 ret = snd_ps3_change_avsetting(card);
673
674 snd_ps3_audio_fixup(card);
675
676 /* to start to generate SPDIF signal, fill data */
677 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
678 snd_ps3_kick_dma(card);
679 pr_debug("%s: end\n", __func__);
680 return ret;
681}
682
683/*
684 * set sampling rate according to the substream
685 */
686static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
687{
688 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
689 struct snd_ps3_avsetting_info avs;
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 if ((card->avs.avs_audio_width != avs.avs_audio_width) ||
735 (card->avs.avs_audio_rate != avs.avs_audio_rate)) {
736 card->avs = avs;
737 snd_ps3_change_avsetting(card);
738
739 pr_debug("%s: after freq=%d width=%d\n", __func__,
740 card->avs.avs_audio_rate, card->avs.avs_audio_width);
741
742 return 0;
743 } else
744 return 1;
745}
746
747
748
749static int snd_ps3_map_mmio(void)
750{
751 the_card.mapped_mmio_vaddr =
752 ioremap(the_card.ps3_dev->m_region->bus_addr,
753 the_card.ps3_dev->m_region->len);
754
755 if (!the_card.mapped_mmio_vaddr) {
756 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
757 __func__, the_card.ps3_dev->m_region->lpar_addr,
758 the_card.ps3_dev->m_region->len);
759 return -ENXIO;
760 }
761
762 return 0;
763};
764
765static void snd_ps3_unmap_mmio(void)
766{
767 iounmap(the_card.mapped_mmio_vaddr);
768 the_card.mapped_mmio_vaddr = NULL;
769}
770
771static int snd_ps3_allocate_irq(void)
772{
773 int ret;
774 u64 lpar_addr, lpar_size;
775 u64 __iomem *mapped;
776
777 /* FIXME: move this to device_init (H/W probe) */
778
779 /* get irq outlet */
780 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
781 if (ret) {
782 pr_info("%s: device map 1 failed %d\n", __func__,
783 ret);
784 return -ENXIO;
785 }
786
787 mapped = ioremap(lpar_addr, lpar_size);
788 if (!mapped) {
789 pr_info("%s: ioremap 1 failed \n", __func__);
790 return -ENXIO;
791 }
792
793 the_card.audio_irq_outlet = in_be64(mapped);
794
795 iounmap(mapped);
796 ret = lv1_gpu_device_unmap(1);
797 if (ret)
798 pr_info("%s: unmap 1 failed\n", __func__);
799
800 /* irq */
801 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
802 the_card.audio_irq_outlet,
803 &the_card.irq_no);
804 if (ret) {
805 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
806 return ret;
807 }
808
809 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
810 SND_PS3_DRIVER_NAME, &the_card);
811 if (ret) {
812 pr_info("%s: request_irq failed (%d)\n", __func__, ret);
813 goto cleanup_irq;
814 }
815
816 return 0;
817
818 cleanup_irq:
819 ps3_irq_plug_destroy(the_card.irq_no);
820 return ret;
821};
822
823static void snd_ps3_free_irq(void)
824{
825 free_irq(the_card.irq_no, &the_card);
826 ps3_irq_plug_destroy(the_card.irq_no);
827}
828
829static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
830{
831 uint64_t val;
832 int ret;
833
834 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
835 (0x03UL << 24) |
836 (0x0fUL << 12) |
837 (PS3_AUDIO_IOID);
838
839 ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);
840 if (ret)
841 pr_info("%s: gpu_attribute failed %d\n", __func__,
842 ret);
843}
844
845static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
846{
847 int ret;
848 u64 lpar_addr, lpar_size;
849
850 BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1));
851 BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND);
852
853 the_card.ps3_dev = dev;
854
855 ret = ps3_open_hv_device(dev);
856
857 if (ret)
858 return -ENXIO;
859
860 /* setup MMIO */
861 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
862 if (ret) {
863 pr_info("%s: device map 2 failed %d\n", __func__, ret);
864 goto clean_open;
865 }
866 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
867 PAGE_SHIFT);
868
869 ret = snd_ps3_map_mmio();
870 if (ret)
871 goto clean_dev_map;
872
873 /* setup DMA area */
874 ps3_dma_region_init(dev, dev->d_region,
875 PAGE_SHIFT, /* use system page size */
876 0, /* dma type; not used */
877 NULL,
878 _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
879 dev->d_region->ioid = PS3_AUDIO_IOID;
880
881 ret = ps3_dma_region_create(dev->d_region);
882 if (ret) {
883 pr_info("%s: region_create\n", __func__);
884 goto clean_mmio;
885 }
886
887 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
888
889 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */
890 the_card.start_delay = snd_ps3_start_delay;
891
892 /* irq */
893 if (snd_ps3_allocate_irq()) {
894 ret = -ENXIO;
895 goto clean_dma_region;
896 }
897
898 /* create card instance */
899 the_card.card = snd_card_new(index, id, THIS_MODULE, 0);
900 if (!the_card.card) {
901 ret = -ENXIO;
902 goto clean_irq;
903 }
904
905 strcpy(the_card.card->driver, "PS3");
906 strcpy(the_card.card->shortname, "PS3");
907 strcpy(the_card.card->longname, "PS3 sound");
908 /* create PCM devices instance */
909 /* NOTE:this driver works assuming pcm:substream = 1:1 */
910 ret = snd_pcm_new(the_card.card,
911 "SPDIF",
912 0, /* instance index, will be stored pcm.device*/
913 1, /* output substream */
914 0, /* input substream */
915 &(the_card.pcm));
916 if (ret)
917 goto clean_card;
918
919 the_card.pcm->private_data = &the_card;
920 strcpy(the_card.pcm->name, "SPDIF");
921
922 /* set pcm ops */
923 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
924 &snd_ps3_pcm_spdif_ops);
925
926 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
927 /* pre-alloc PCM DMA buffer*/
928 ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
929 SNDRV_DMA_TYPE_DEV,
930 &dev->core,
931 SND_PS3_PCM_PREALLOC_SIZE,
932 SND_PS3_PCM_PREALLOC_SIZE);
933 if (ret < 0) {
934 pr_info("%s: prealloc failed\n", __func__);
935 goto clean_card;
936 }
937
938 /*
939 * allocate null buffer
940 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
941 * PAGE_SIZE is enogh
942 */
943 if (!(the_card.null_buffer_start_vaddr =
944 dma_alloc_coherent(&the_card.ps3_dev->core,
945 PAGE_SIZE,
946 &the_card.null_buffer_start_dma_addr,
947 GFP_KERNEL))) {
948 pr_info("%s: nullbuffer alloc failed\n", __func__);
949 goto clean_preallocate;
950 }
951 pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__,
952 the_card.null_buffer_start_vaddr,
953 the_card.null_buffer_start_dma_addr);
954 /* set default sample rate/word width */
955 snd_ps3_init_avsetting(&the_card);
956
957 /* register the card */
958 ret = snd_card_register(the_card.card);
959 if (ret < 0)
960 goto clean_dma_map;
961
962 pr_info("%s started. start_delay=%dms\n",
963 the_card.card->longname, the_card.start_delay);
964 return 0;
965
966clean_dma_map:
967 dma_free_coherent(&the_card.ps3_dev->core,
968 PAGE_SIZE,
969 the_card.null_buffer_start_vaddr,
970 the_card.null_buffer_start_dma_addr);
971clean_preallocate:
972 snd_pcm_lib_preallocate_free_for_all(the_card.pcm);
973clean_card:
974 snd_card_free(the_card.card);
975clean_irq:
976 snd_ps3_free_irq();
977clean_dma_region:
978 ps3_dma_region_free(dev->d_region);
979clean_mmio:
980 snd_ps3_unmap_mmio();
981clean_dev_map:
982 lv1_gpu_device_unmap(2);
983clean_open:
984 ps3_close_hv_device(dev);
985 /*
986 * there is no destructor function to pcm.
987 * midlayer automatically releases if the card removed
988 */
989 return ret;
990}; /* snd_ps3_probe */
991
992/* called when module removal */
993static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev)
994{
995 int ret;
996 pr_info("%s:start id=%d\n", __func__, dev->match_id);
997 if (dev->match_id != PS3_MATCH_ID_SOUND)
998 return -ENXIO;
999
1000 /*
1001 * ctl and preallocate buffer will be freed in
1002 * snd_card_free
1003 */
1004 ret = snd_card_free(the_card.card);
1005 if (ret)
1006 pr_info("%s: ctl freecard=%d\n", __func__, ret);
1007
1008 dma_free_coherent(&dev->core,
1009 PAGE_SIZE,
1010 the_card.null_buffer_start_vaddr,
1011 the_card.null_buffer_start_dma_addr);
1012
1013 ps3_dma_region_free(dev->d_region);
1014
1015 snd_ps3_free_irq();
1016 snd_ps3_unmap_mmio();
1017
1018 lv1_gpu_device_unmap(2);
1019 ps3_close_hv_device(dev);
1020 pr_info("%s:end id=%d\n", __func__, dev->match_id);
1021 return 0;
1022} /* snd_ps3_remove */
1023
1024static struct ps3_system_bus_driver snd_ps3_bus_driver_info = {
1025 .match_id = PS3_MATCH_ID_SOUND,
1026 .probe = snd_ps3_driver_probe,
1027 .remove = snd_ps3_driver_remove,
1028 .shutdown = snd_ps3_driver_remove,
1029 .core = {
1030 .name = SND_PS3_DRIVER_NAME,
1031 .owner = THIS_MODULE,
1032 },
1033};
1034
1035
1036/*
1037 * Interrupt handler
1038 */
1039static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
1040{
1041
1042 uint32_t port_intr;
1043 int underflow_occured = 0;
1044 struct snd_ps3_card_info *card = dev_id;
1045
1046 if (!card->running) {
1047 update_reg(PS3_AUDIO_AX_IS, 0);
1048 update_reg(PS3_AUDIO_INTR_0, 0);
1049 return IRQ_HANDLED;
1050 }
1051
1052 port_intr = read_reg(PS3_AUDIO_AX_IS);
1053 /*
1054 *serial buffer empty detected (every 4 times),
1055 *program next dma and kick it
1056 */
1057 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
1058 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
1059 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1060 write_reg(PS3_AUDIO_AX_IS, port_intr);
1061 underflow_occured = 1;
1062 }
1063 if (card->silent) {
1064 /* we are still in silent time */
1065 snd_ps3_program_dma(card,
1066 (underflow_occured) ?
1067 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
1068 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
1069 snd_ps3_kick_dma(card);
1070 card->silent --;
1071 } else {
1072 snd_ps3_program_dma(card,
1073 (underflow_occured) ?
1074 SND_PS3_DMA_FILLTYPE_FIRSTFILL :
1075 SND_PS3_DMA_FILLTYPE_RUNNING);
1076 snd_ps3_kick_dma(card);
1077 snd_pcm_period_elapsed(card->substream);
1078 }
1079 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1080 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
1081 /*
1082 * serial out underflow, but buffer empty not detected.
1083 * in this case, fill fifo with 0 to recover. After
1084 * filling dummy data, serial automatically start to
1085 * consume them and then will generate normal buffer
1086 * empty interrupts.
1087 * If both buffer underflow and buffer empty are occured,
1088 * it is better to do nomal data transfer than empty one
1089 */
1090 snd_ps3_program_dma(card,
1091 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1092 snd_ps3_kick_dma(card);
1093 snd_ps3_program_dma(card,
1094 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1095 snd_ps3_kick_dma(card);
1096 }
1097 /* clear interrupt cause */
1098 return IRQ_HANDLED;
1099};
1100
1101/*
1102 * module/subsystem initialize/terminate
1103 */
1104static int __init snd_ps3_init(void)
1105{
1106 int ret;
1107
1108 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
1109 return -ENXIO;
1110
1111 memset(&the_card, 0, sizeof(the_card));
1112 spin_lock_init(&the_card.dma_lock);
1113
1114 /* register systembus DRIVER, this calls our probe() func */
1115 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info);
1116
1117 return ret;
1118}
1119
1120static void __exit snd_ps3_exit(void)
1121{
1122 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
1123}
1124
1125MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 19:51:21 -0500