1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Audio support for PS3
4 * Copyright (C) 2007 Sony Computer Entertainment Inc.
5 * All rights reserved.
6 * Copyright 2006, 2007 Sony Corporation
7 */
8
9 #include <linux/dma-mapping.h>
10 #include <linux/dmapool.h>
11 #include <linux/gfp.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/io.h>
15 #include <linux/module.h>
16
17 #include <sound/asound.h>
18 #include <sound/control.h>
19 #include <sound/core.h>
20 #include <sound/initval.h>
21 #include <sound/memalloc.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24
25 #include <asm/dma.h>
26 #include <asm/firmware.h>
27 #include <asm/lv1call.h>
28 #include <asm/ps3.h>
29 #include <asm/ps3av.h>
30
31 #include "snd_ps3.h"
32 #include "snd_ps3_reg.h"
33
34
35 /*
36 * global
37 */
38 static struct snd_ps3_card_info the_card;
39
40 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY;
41
42 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644);
43 MODULE_PARM_DESC(start_delay, "time to insert silent data in ms");
44
45 static int index = SNDRV_DEFAULT_IDX1;
46 static char *id = SNDRV_DEFAULT_STR1;
47
48 module_param(index, int, 0444);
49 MODULE_PARM_DESC(index, "Index value for PS3 soundchip.");
50 module_param(id, charp, 0444);
51 MODULE_PARM_DESC(id, "ID string for PS3 soundchip.");
52
53
54 /*
55 * PS3 audio register access
56 */
read_reg(unsigned int reg)57 static inline u32 read_reg(unsigned int reg)
58 {
59 return in_be32(the_card.mapped_mmio_vaddr + reg);
60 }
write_reg(unsigned int reg,u32 val)61 static inline void write_reg(unsigned int reg, u32 val)
62 {
63 out_be32(the_card.mapped_mmio_vaddr + reg, val);
64 }
update_reg(unsigned int reg,u32 or_val)65 static inline void update_reg(unsigned int reg, u32 or_val)
66 {
67 u32 newval = read_reg(reg) | or_val;
68 write_reg(reg, newval);
69 }
update_mask_reg(unsigned int reg,u32 mask,u32 or_val)70 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val)
71 {
72 u32 newval = (read_reg(reg) & mask) | or_val;
73 write_reg(reg, newval);
74 }
75
76 /*
77 * ALSA defs
78 */
79 static const struct snd_pcm_hardware snd_ps3_pcm_hw = {
80 .info = (SNDRV_PCM_INFO_MMAP |
81 SNDRV_PCM_INFO_NONINTERLEAVED |
82 SNDRV_PCM_INFO_MMAP_VALID),
83 .formats = (SNDRV_PCM_FMTBIT_S16_BE |
84 SNDRV_PCM_FMTBIT_S24_BE),
85 .rates = (SNDRV_PCM_RATE_44100 |
86 SNDRV_PCM_RATE_48000 |
87 SNDRV_PCM_RATE_88200 |
88 SNDRV_PCM_RATE_96000),
89 .rate_min = 44100,
90 .rate_max = 96000,
91
92 .channels_min = 2, /* stereo only */
93 .channels_max = 2,
94
95 .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64,
96
97 /* interrupt by four stages */
98 .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
99 .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
100
101 .periods_min = 16,
102 .periods_max = 32, /* buffer_size_max/ period_bytes_max */
103
104 .fifo_size = PS3_AUDIO_FIFO_SIZE
105 };
106
snd_ps3_verify_dma_stop(struct snd_ps3_card_info * card,int count,int force_stop)107 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
108 int count, int force_stop)
109 {
110 int dma_ch, done, retries, stop_forced = 0;
111 uint32_t status;
112
113 for (dma_ch = 0; dma_ch < 8; dma_ch++) {
114 retries = count;
115 do {
116 status = read_reg(PS3_AUDIO_KICK(dma_ch)) &
117 PS3_AUDIO_KICK_STATUS_MASK;
118 switch (status) {
119 case PS3_AUDIO_KICK_STATUS_DONE:
120 case PS3_AUDIO_KICK_STATUS_NOTIFY:
121 case PS3_AUDIO_KICK_STATUS_CLEAR:
122 case PS3_AUDIO_KICK_STATUS_ERROR:
123 done = 1;
124 break;
125 default:
126 done = 0;
127 udelay(10);
128 }
129 } while (!done && --retries);
130 if (!retries && force_stop) {
131 pr_info("%s: DMA ch %d is not stopped.",
132 __func__, dma_ch);
133 /* last resort. force to stop dma.
134 * NOTE: this cause DMA done interrupts
135 */
136 update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR);
137 stop_forced = 1;
138 }
139 }
140 return stop_forced;
141 }
142
143 /*
144 * wait for all dma is done.
145 * NOTE: caller should reset card->running before call.
146 * If not, the interrupt handler will re-start DMA,
147 * then DMA is never stopped.
148 */
snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info * card)149 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card)
150 {
151 int stop_forced;
152 /*
153 * wait for the last dma is done
154 */
155
156 /*
157 * expected maximum DMA done time is 5.7ms + something (DMA itself).
158 * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next
159 * DMA kick event would occur.
160 */
161 stop_forced = snd_ps3_verify_dma_stop(card, 700, 1);
162
163 /*
164 * clear outstanding interrupts.
165 */
166 update_reg(PS3_AUDIO_INTR_0, 0);
167 update_reg(PS3_AUDIO_AX_IS, 0);
168
169 /*
170 *revert CLEAR bit since it will not reset automatically after DMA stop
171 */
172 if (stop_forced)
173 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0);
174 /* ensure the hardware sees changes */
175 wmb();
176 }
177
snd_ps3_kick_dma(struct snd_ps3_card_info * card)178 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card)
179 {
180
181 update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST);
182 /* ensure the hardware sees the change */
183 wmb();
184 }
185
186 /*
187 * convert virtual addr to ioif bus addr.
188 */
v_to_bus(struct snd_ps3_card_info * card,void * paddr,int ch)189 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card, void *paddr, int ch)
190 {
191 return card->dma_start_bus_addr[ch] +
192 (paddr - card->dma_start_vaddr[ch]);
193 };
194
195
196 /*
197 * increment ring buffer pointer.
198 * NOTE: caller must hold write spinlock
199 */
snd_ps3_bump_buffer(struct snd_ps3_card_info * card,enum snd_ps3_ch ch,size_t byte_count,int stage)200 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card,
201 enum snd_ps3_ch ch, size_t byte_count,
202 int stage)
203 {
204 if (!stage)
205 card->dma_last_transfer_vaddr[ch] =
206 card->dma_next_transfer_vaddr[ch];
207 card->dma_next_transfer_vaddr[ch] += byte_count;
208 if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <=
209 card->dma_next_transfer_vaddr[ch]) {
210 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch];
211 }
212 }
213 /*
214 * setup dmac to send data to audio and attenuate samples on the ring buffer
215 */
snd_ps3_program_dma(struct snd_ps3_card_info * card,enum snd_ps3_dma_filltype filltype)216 static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
217 enum snd_ps3_dma_filltype filltype)
218 {
219 /* this dmac does not support over 4G */
220 uint32_t dma_addr;
221 int fill_stages, dma_ch, stage;
222 enum snd_ps3_ch ch;
223 uint32_t ch0_kick_event = 0; /* initialize to mute gcc */
224 unsigned long irqsave;
225 int silent = 0;
226
227 switch (filltype) {
228 case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL:
229 silent = 1;
230 fallthrough;
231 case SND_PS3_DMA_FILLTYPE_FIRSTFILL:
232 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS;
233 break;
234
235 case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING:
236 silent = 1;
237 fallthrough;
238 case SND_PS3_DMA_FILLTYPE_RUNNING:
239 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY;
240 break;
241 }
242
243 snd_ps3_verify_dma_stop(card, 700, 0);
244 fill_stages = 4;
245 spin_lock_irqsave(&card->dma_lock, irqsave);
246 for (ch = 0; ch < 2; ch++) {
247 for (stage = 0; stage < fill_stages; stage++) {
248 dma_ch = stage * 2 + ch;
249 if (silent)
250 dma_addr = card->null_buffer_start_dma_addr;
251 else
252 dma_addr =
253 v_to_bus(card,
254 card->dma_next_transfer_vaddr[ch],
255 ch);
256
257 write_reg(PS3_AUDIO_SOURCE(dma_ch),
258 (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY |
259 dma_addr));
260
261 /* dst: fixed to 3wire#0 */
262 if (ch == 0)
263 write_reg(PS3_AUDIO_DEST(dma_ch),
264 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
265 PS3_AUDIO_AO_3W_LDATA(0)));
266 else
267 write_reg(PS3_AUDIO_DEST(dma_ch),
268 (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
269 PS3_AUDIO_AO_3W_RDATA(0)));
270
271 /* count always 1 DMA block (1/2 stage = 128 bytes) */
272 write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0);
273 /* bump pointer if needed */
274 if (!silent)
275 snd_ps3_bump_buffer(card, ch,
276 PS3_AUDIO_DMAC_BLOCK_SIZE,
277 stage);
278
279 /* kick event */
280 if (dma_ch == 0)
281 write_reg(PS3_AUDIO_KICK(dma_ch),
282 ch0_kick_event);
283 else
284 write_reg(PS3_AUDIO_KICK(dma_ch),
285 PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch
286 - 1) |
287 PS3_AUDIO_KICK_REQUEST);
288 }
289 }
290 /* ensure the hardware sees the change */
291 wmb();
292 spin_unlock_irqrestore(&card->dma_lock, irqsave);
293
294 return 0;
295 }
296
297 /*
298 * Interrupt handler
299 */
snd_ps3_interrupt(int irq,void * dev_id)300 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
301 {
302
303 uint32_t port_intr;
304 int underflow_occured = 0;
305 struct snd_ps3_card_info *card = dev_id;
306
307 if (!card->running) {
308 update_reg(PS3_AUDIO_AX_IS, 0);
309 update_reg(PS3_AUDIO_INTR_0, 0);
310 return IRQ_HANDLED;
311 }
312
313 port_intr = read_reg(PS3_AUDIO_AX_IS);
314 /*
315 *serial buffer empty detected (every 4 times),
316 *program next dma and kick it
317 */
318 if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
319 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
320 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
321 write_reg(PS3_AUDIO_AX_IS, port_intr);
322 underflow_occured = 1;
323 }
324 if (card->silent) {
325 /* we are still in silent time */
326 snd_ps3_program_dma(card,
327 (underflow_occured) ?
328 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
329 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
330 snd_ps3_kick_dma(card);
331 card->silent--;
332 } else {
333 snd_ps3_program_dma(card,
334 (underflow_occured) ?
335 SND_PS3_DMA_FILLTYPE_FIRSTFILL :
336 SND_PS3_DMA_FILLTYPE_RUNNING);
337 snd_ps3_kick_dma(card);
338 snd_pcm_period_elapsed(card->substream);
339 }
340 } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
341 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
342 /*
343 * serial out underflow, but buffer empty not detected.
344 * in this case, fill fifo with 0 to recover. After
345 * filling dummy data, serial automatically start to
346 * consume them and then will generate normal buffer
347 * empty interrupts.
348 * If both buffer underflow and buffer empty are occurred,
349 * it is better to do nomal data transfer than empty one
350 */
351 snd_ps3_program_dma(card,
352 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
353 snd_ps3_kick_dma(card);
354 snd_ps3_program_dma(card,
355 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
356 snd_ps3_kick_dma(card);
357 }
358 /* clear interrupt cause */
359 return IRQ_HANDLED;
360 };
361
362 /*
363 * audio mute on/off
364 * mute_on : 0 output enabled
365 * 1 mute
366 */
snd_ps3_mute(int mute_on)367 static int snd_ps3_mute(int mute_on)
368 {
369 return ps3av_audio_mute(mute_on);
370 }
371
372 /*
373 * av setting
374 * NOTE: calling this function may generate audio interrupt.
375 */
snd_ps3_change_avsetting(struct snd_ps3_card_info * card)376 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
377 {
378 int ret, retries, i;
379 pr_debug("%s: start\n", __func__);
380
381 ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
382 card->avs.avs_audio_rate,
383 card->avs.avs_audio_width,
384 card->avs.avs_audio_format,
385 card->avs.avs_audio_source);
386 /*
387 * Reset the following unwanted settings:
388 */
389
390 /* disable all 3wire buffers */
391 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
392 ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
393 PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
394 PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
395 PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
396 0);
397 wmb(); /* ensure the hardware sees the change */
398 /* wait for actually stopped */
399 retries = 1000;
400 while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
401 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
402 PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
403 PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
404 PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
405 --retries) {
406 udelay(1);
407 }
408
409 /* reset buffer pointer */
410 for (i = 0; i < 4; i++) {
411 update_reg(PS3_AUDIO_AO_3WCTRL(i),
412 PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
413 udelay(10);
414 }
415 wmb(); /* ensure the hardware actually start resetting */
416
417 /* enable 3wire#0 buffer */
418 update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
419
420
421 /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
422 update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
423 ~PS3_AUDIO_AO_3WCTRL_ASODF,
424 PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
425 update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
426 ~PS3_AUDIO_AO_SPDCTRL_SPODF,
427 PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
428 /* ensure all the setting above is written back to register */
429 wmb();
430 /* avsetting driver altered AX_IE, caller must reset it if you want */
431 pr_debug("%s: end\n", __func__);
432 return ret;
433 }
434
435 /*
436 * set sampling rate according to the substream
437 */
snd_ps3_set_avsetting(struct snd_pcm_substream * substream)438 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
439 {
440 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
441 struct snd_ps3_avsetting_info avs;
442 int ret;
443
444 avs = card->avs;
445
446 pr_debug("%s: called freq=%d width=%d\n", __func__,
447 substream->runtime->rate,
448 snd_pcm_format_width(substream->runtime->format));
449
450 pr_debug("%s: before freq=%d width=%d\n", __func__,
451 card->avs.avs_audio_rate, card->avs.avs_audio_width);
452
453 /* sample rate */
454 switch (substream->runtime->rate) {
455 case 44100:
456 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
457 break;
458 case 48000:
459 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
460 break;
461 case 88200:
462 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
463 break;
464 case 96000:
465 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
466 break;
467 default:
468 pr_info("%s: invalid rate %d\n", __func__,
469 substream->runtime->rate);
470 return 1;
471 }
472
473 /* width */
474 switch (snd_pcm_format_width(substream->runtime->format)) {
475 case 16:
476 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
477 break;
478 case 24:
479 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
480 break;
481 default:
482 pr_info("%s: invalid width %d\n", __func__,
483 snd_pcm_format_width(substream->runtime->format));
484 return 1;
485 }
486
487 memcpy(avs.avs_cs_info, ps3av_mode_cs_info, 8);
488
489 if (memcmp(&card->avs, &avs, sizeof(avs))) {
490 pr_debug("%s: after freq=%d width=%d\n", __func__,
491 card->avs.avs_audio_rate, card->avs.avs_audio_width);
492
493 card->avs = avs;
494 snd_ps3_change_avsetting(card);
495 ret = 0;
496 } else
497 ret = 1;
498
499 /* check CS non-audio bit and mute accordingly */
500 if (avs.avs_cs_info[0] & 0x02)
501 ps3av_audio_mute_analog(1); /* mute if non-audio */
502 else
503 ps3av_audio_mute_analog(0);
504
505 return ret;
506 }
507
508 /*
509 * PCM operators
510 */
snd_ps3_pcm_open(struct snd_pcm_substream * substream)511 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
512 {
513 struct snd_pcm_runtime *runtime = substream->runtime;
514 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
515
516 /* to retrieve substream/runtime in interrupt handler */
517 card->substream = substream;
518
519 runtime->hw = snd_ps3_pcm_hw;
520
521 card->start_delay = snd_ps3_start_delay;
522
523 /* mute off */
524 snd_ps3_mute(0); /* this function sleep */
525
526 snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
527 PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2);
528 return 0;
529 };
530
snd_ps3_pcm_close(struct snd_pcm_substream * substream)531 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
532 {
533 /* mute on */
534 snd_ps3_mute(1);
535 return 0;
536 };
537
snd_ps3_delay_to_bytes(struct snd_pcm_substream * substream,unsigned int delay_ms)538 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
539 unsigned int delay_ms)
540 {
541 int ret;
542 int rate ;
543
544 rate = substream->runtime->rate;
545 ret = snd_pcm_format_size(substream->runtime->format,
546 rate * delay_ms / 1000)
547 * substream->runtime->channels;
548
549 pr_debug("%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n",
550 __func__,
551 delay_ms,
552 rate,
553 snd_pcm_format_size(substream->runtime->format, rate),
554 rate * delay_ms / 1000,
555 ret);
556
557 return ret;
558 };
559
snd_ps3_pcm_prepare(struct snd_pcm_substream * substream)560 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream)
561 {
562 struct snd_pcm_runtime *runtime = substream->runtime;
563 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
564 unsigned long irqsave;
565
566 if (!snd_ps3_set_avsetting(substream)) {
567 /* some parameter changed */
568 write_reg(PS3_AUDIO_AX_IE,
569 PS3_AUDIO_AX_IE_ASOBEIE(0) |
570 PS3_AUDIO_AX_IE_ASOBUIE(0));
571 /*
572 * let SPDIF device re-lock with SPDIF signal,
573 * start with some silence
574 */
575 card->silent = snd_ps3_delay_to_bytes(substream,
576 card->start_delay) /
577 (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */
578 }
579
580 /* restart ring buffer pointer */
581 spin_lock_irqsave(&card->dma_lock, irqsave);
582 {
583 card->dma_buffer_size = runtime->dma_bytes;
584
585 card->dma_last_transfer_vaddr[SND_PS3_CH_L] =
586 card->dma_next_transfer_vaddr[SND_PS3_CH_L] =
587 card->dma_start_vaddr[SND_PS3_CH_L] =
588 runtime->dma_area;
589 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr;
590
591 card->dma_last_transfer_vaddr[SND_PS3_CH_R] =
592 card->dma_next_transfer_vaddr[SND_PS3_CH_R] =
593 card->dma_start_vaddr[SND_PS3_CH_R] =
594 runtime->dma_area + (runtime->dma_bytes / 2);
595 card->dma_start_bus_addr[SND_PS3_CH_R] =
596 runtime->dma_addr + (runtime->dma_bytes / 2);
597
598 pr_debug("%s: vaddr=%p bus=%#llx\n", __func__,
599 card->dma_start_vaddr[SND_PS3_CH_L],
600 card->dma_start_bus_addr[SND_PS3_CH_L]);
601
602 }
603 spin_unlock_irqrestore(&card->dma_lock, irqsave);
604
605 /* ensure the hardware sees the change */
606 mb();
607
608 return 0;
609 };
610
snd_ps3_pcm_trigger(struct snd_pcm_substream * substream,int cmd)611 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
612 int cmd)
613 {
614 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
615
616 switch (cmd) {
617 case SNDRV_PCM_TRIGGER_START:
618 /* clear outstanding interrupts */
619 update_reg(PS3_AUDIO_AX_IS, 0);
620
621 spin_lock(&card->dma_lock);
622 {
623 card->running = 1;
624 }
625 spin_unlock(&card->dma_lock);
626
627 snd_ps3_program_dma(card,
628 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
629 snd_ps3_kick_dma(card);
630 while (read_reg(PS3_AUDIO_KICK(7)) &
631 PS3_AUDIO_KICK_STATUS_MASK) {
632 udelay(1);
633 }
634 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
635 snd_ps3_kick_dma(card);
636 break;
637
638 case SNDRV_PCM_TRIGGER_STOP:
639 spin_lock(&card->dma_lock);
640 {
641 card->running = 0;
642 }
643 spin_unlock(&card->dma_lock);
644 snd_ps3_wait_for_dma_stop(card);
645 break;
646 default:
647 break;
648
649 }
650
651 return 0;
652 };
653
654 /*
655 * report current pointer
656 */
snd_ps3_pcm_pointer(struct snd_pcm_substream * substream)657 static snd_pcm_uframes_t snd_ps3_pcm_pointer(
658 struct snd_pcm_substream *substream)
659 {
660 struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
661 size_t bytes;
662 snd_pcm_uframes_t ret;
663
664 spin_lock(&card->dma_lock);
665 {
666 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] -
667 card->dma_start_vaddr[SND_PS3_CH_L]);
668 }
669 spin_unlock(&card->dma_lock);
670
671 ret = bytes_to_frames(substream->runtime, bytes * 2);
672
673 return ret;
674 };
675
676 /*
677 * SPDIF status bits controls
678 */
snd_ps3_spdif_mask_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)679 static int snd_ps3_spdif_mask_info(struct snd_kcontrol *kcontrol,
680 struct snd_ctl_elem_info *uinfo)
681 {
682 uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
683 uinfo->count = 1;
684 return 0;
685 }
686
687 /* FIXME: ps3av_set_audio_mode() assumes only consumer mode */
snd_ps3_spdif_cmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)688 static int snd_ps3_spdif_cmask_get(struct snd_kcontrol *kcontrol,
689 struct snd_ctl_elem_value *ucontrol)
690 {
691 memset(ucontrol->value.iec958.status, 0xff, 8);
692 return 0;
693 }
694
snd_ps3_spdif_pmask_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)695 static int snd_ps3_spdif_pmask_get(struct snd_kcontrol *kcontrol,
696 struct snd_ctl_elem_value *ucontrol)
697 {
698 return 0;
699 }
700
snd_ps3_spdif_default_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)701 static int snd_ps3_spdif_default_get(struct snd_kcontrol *kcontrol,
702 struct snd_ctl_elem_value *ucontrol)
703 {
704 memcpy(ucontrol->value.iec958.status, ps3av_mode_cs_info, 8);
705 return 0;
706 }
707
snd_ps3_spdif_default_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)708 static int snd_ps3_spdif_default_put(struct snd_kcontrol *kcontrol,
709 struct snd_ctl_elem_value *ucontrol)
710 {
711 if (memcmp(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8)) {
712 memcpy(ps3av_mode_cs_info, ucontrol->value.iec958.status, 8);
713 return 1;
714 }
715 return 0;
716 }
717
718 static const struct snd_kcontrol_new spdif_ctls[] = {
719 {
720 .access = SNDRV_CTL_ELEM_ACCESS_READ,
721 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
722 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
723 .info = snd_ps3_spdif_mask_info,
724 .get = snd_ps3_spdif_cmask_get,
725 },
726 {
727 .access = SNDRV_CTL_ELEM_ACCESS_READ,
728 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
729 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PRO_MASK),
730 .info = snd_ps3_spdif_mask_info,
731 .get = snd_ps3_spdif_pmask_get,
732 },
733 {
734 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
735 .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
736 .info = snd_ps3_spdif_mask_info,
737 .get = snd_ps3_spdif_default_get,
738 .put = snd_ps3_spdif_default_put,
739 },
740 };
741
742 static const struct snd_pcm_ops snd_ps3_pcm_spdif_ops = {
743 .open = snd_ps3_pcm_open,
744 .close = snd_ps3_pcm_close,
745 .prepare = snd_ps3_pcm_prepare,
746 .trigger = snd_ps3_pcm_trigger,
747 .pointer = snd_ps3_pcm_pointer,
748 };
749
750
snd_ps3_map_mmio(void)751 static int snd_ps3_map_mmio(void)
752 {
753 the_card.mapped_mmio_vaddr =
754 ioremap(the_card.ps3_dev->m_region->bus_addr,
755 the_card.ps3_dev->m_region->len);
756
757 if (!the_card.mapped_mmio_vaddr) {
758 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
759 __func__, the_card.ps3_dev->m_region->lpar_addr,
760 the_card.ps3_dev->m_region->len);
761 return -ENXIO;
762 }
763
764 return 0;
765 };
766
snd_ps3_unmap_mmio(void)767 static void snd_ps3_unmap_mmio(void)
768 {
769 iounmap(the_card.mapped_mmio_vaddr);
770 the_card.mapped_mmio_vaddr = NULL;
771 }
772
snd_ps3_allocate_irq(void)773 static int snd_ps3_allocate_irq(void)
774 {
775 int ret;
776 u64 lpar_addr, lpar_size;
777 u64 __iomem *mapped;
778
779 /* FIXME: move this to device_init (H/W probe) */
780
781 /* get irq outlet */
782 ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
783 if (ret) {
784 pr_info("%s: device map 1 failed %d\n", __func__,
785 ret);
786 return -ENXIO;
787 }
788
789 mapped = ioremap(lpar_addr, lpar_size);
790 if (!mapped) {
791 pr_info("%s: ioremap 1 failed \n", __func__);
792 return -ENXIO;
793 }
794
795 the_card.audio_irq_outlet = in_be64(mapped);
796
797 iounmap(mapped);
798 ret = lv1_gpu_device_unmap(1);
799 if (ret)
800 pr_info("%s: unmap 1 failed\n", __func__);
801
802 /* irq */
803 ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
804 the_card.audio_irq_outlet,
805 &the_card.irq_no);
806 if (ret) {
807 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
808 return ret;
809 }
810
811 ret = request_irq(the_card.irq_no, snd_ps3_interrupt, 0,
812 SND_PS3_DRIVER_NAME, &the_card);
813 if (ret) {
814 pr_info("%s: request_irq failed (%d)\n", __func__, ret);
815 goto cleanup_irq;
816 }
817
818 return 0;
819
820 cleanup_irq:
821 ps3_irq_plug_destroy(the_card.irq_no);
822 return ret;
823 };
824
snd_ps3_free_irq(void)825 static void snd_ps3_free_irq(void)
826 {
827 free_irq(the_card.irq_no, &the_card);
828 ps3_irq_plug_destroy(the_card.irq_no);
829 }
830
snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)831 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
832 {
833 uint64_t val;
834 int ret;
835
836 val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
837 (0x03UL << 24) |
838 (0x0fUL << 12) |
839 (PS3_AUDIO_IOID);
840
841 ret = lv1_gpu_attribute(0x100, 0x007, val);
842 if (ret)
843 pr_info("%s: gpu_attribute failed %d\n", __func__,
844 ret);
845 }
846
snd_ps3_audio_fixup(struct snd_ps3_card_info * card)847 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
848 {
849 /*
850 * avsetting driver seems to never change the following
851 * so, init them here once
852 */
853
854 /* no dma interrupt needed */
855 write_reg(PS3_AUDIO_INTR_EN_0, 0);
856
857 /* use every 4 buffer empty interrupt */
858 update_mask_reg(PS3_AUDIO_AX_IC,
859 PS3_AUDIO_AX_IC_AASOIMD_MASK,
860 PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
861
862 /* enable 3wire clocks */
863 update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
864 ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
865 PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
866 0);
867 update_reg(PS3_AUDIO_AO_3WMCTRL,
868 PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
869 }
870
snd_ps3_init_avsetting(struct snd_ps3_card_info * card)871 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
872 {
873 int ret;
874 pr_debug("%s: start\n", __func__);
875 card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
876 card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
877 card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
878 card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
879 card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
880 memcpy(card->avs.avs_cs_info, ps3av_mode_cs_info, 8);
881
882 ret = snd_ps3_change_avsetting(card);
883
884 snd_ps3_audio_fixup(card);
885
886 /* to start to generate SPDIF signal, fill data */
887 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
888 snd_ps3_kick_dma(card);
889 pr_debug("%s: end\n", __func__);
890 return ret;
891 }
892
snd_ps3_driver_probe(struct ps3_system_bus_device * dev)893 static int snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
894 {
895 int i, ret;
896 u64 lpar_addr, lpar_size;
897 static u64 dummy_mask;
898
899 the_card.ps3_dev = dev;
900
901 ret = ps3_open_hv_device(dev);
902
903 if (ret)
904 return -ENXIO;
905
906 /* setup MMIO */
907 ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
908 if (ret) {
909 pr_info("%s: device map 2 failed %d\n", __func__, ret);
910 goto clean_open;
911 }
912 ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
913 PAGE_SHIFT);
914
915 ret = snd_ps3_map_mmio();
916 if (ret)
917 goto clean_dev_map;
918
919 /* setup DMA area */
920 ps3_dma_region_init(dev, dev->d_region,
921 PAGE_SHIFT, /* use system page size */
922 0, /* dma type; not used */
923 NULL,
924 ALIGN(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
925 dev->d_region->ioid = PS3_AUDIO_IOID;
926
927 ret = ps3_dma_region_create(dev->d_region);
928 if (ret) {
929 pr_info("%s: region_create\n", __func__);
930 goto clean_mmio;
931 }
932
933 dummy_mask = DMA_BIT_MASK(32);
934 dev->core.dma_mask = &dummy_mask;
935 dma_set_coherent_mask(&dev->core, dummy_mask);
936
937 snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
938
939 /* CONFIG_SND_PS3_DEFAULT_START_DELAY */
940 the_card.start_delay = snd_ps3_start_delay;
941
942 /* irq */
943 if (snd_ps3_allocate_irq()) {
944 ret = -ENXIO;
945 goto clean_dma_region;
946 }
947
948 /* create card instance */
949 ret = snd_card_new(&dev->core, index, id, THIS_MODULE,
950 0, &the_card.card);
951 if (ret < 0)
952 goto clean_irq;
953
954 strcpy(the_card.card->driver, "PS3");
955 strcpy(the_card.card->shortname, "PS3");
956 strcpy(the_card.card->longname, "PS3 sound");
957
958 /* create control elements */
959 for (i = 0; i < ARRAY_SIZE(spdif_ctls); i++) {
960 ret = snd_ctl_add(the_card.card,
961 snd_ctl_new1(&spdif_ctls[i], &the_card));
962 if (ret < 0)
963 goto clean_card;
964 }
965
966 /* create PCM devices instance */
967 /* NOTE:this driver works assuming pcm:substream = 1:1 */
968 ret = snd_pcm_new(the_card.card,
969 "SPDIF",
970 0, /* instance index, will be stored pcm.device*/
971 1, /* output substream */
972 0, /* input substream */
973 &(the_card.pcm));
974 if (ret)
975 goto clean_card;
976
977 the_card.pcm->private_data = &the_card;
978 strcpy(the_card.pcm->name, "SPDIF");
979
980 /* set pcm ops */
981 snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
982 &snd_ps3_pcm_spdif_ops);
983
984 the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
985 /* pre-alloc PCM DMA buffer*/
986 snd_pcm_set_managed_buffer_all(the_card.pcm,
987 SNDRV_DMA_TYPE_DEV,
988 &dev->core,
989 SND_PS3_PCM_PREALLOC_SIZE,
990 SND_PS3_PCM_PREALLOC_SIZE);
991
992 /*
993 * allocate null buffer
994 * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
995 * PAGE_SIZE is enogh
996 */
997 the_card.null_buffer_start_vaddr =
998 dma_alloc_coherent(&the_card.ps3_dev->core,
999 PAGE_SIZE,
1000 &the_card.null_buffer_start_dma_addr,
1001 GFP_KERNEL);
1002 if (!the_card.null_buffer_start_vaddr) {
1003 pr_info("%s: nullbuffer alloc failed\n", __func__);
1004 ret = -ENOMEM;
1005 goto clean_card;
1006 }
1007 pr_debug("%s: null vaddr=%p dma=%#llx\n", __func__,
1008 the_card.null_buffer_start_vaddr,
1009 the_card.null_buffer_start_dma_addr);
1010 /* set default sample rate/word width */
1011 snd_ps3_init_avsetting(&the_card);
1012
1013 /* register the card */
1014 ret = snd_card_register(the_card.card);
1015 if (ret < 0)
1016 goto clean_dma_map;
1017
1018 pr_info("%s started. start_delay=%dms\n",
1019 the_card.card->longname, the_card.start_delay);
1020 return 0;
1021
1022 clean_dma_map:
1023 dma_free_coherent(&the_card.ps3_dev->core,
1024 PAGE_SIZE,
1025 the_card.null_buffer_start_vaddr,
1026 the_card.null_buffer_start_dma_addr);
1027 clean_card:
1028 snd_card_free(the_card.card);
1029 clean_irq:
1030 snd_ps3_free_irq();
1031 clean_dma_region:
1032 ps3_dma_region_free(dev->d_region);
1033 clean_mmio:
1034 snd_ps3_unmap_mmio();
1035 clean_dev_map:
1036 lv1_gpu_device_unmap(2);
1037 clean_open:
1038 ps3_close_hv_device(dev);
1039 /*
1040 * there is no destructor function to pcm.
1041 * midlayer automatically releases if the card removed
1042 */
1043 return ret;
1044 }; /* snd_ps3_probe */
1045
1046 /* called when module removal */
snd_ps3_driver_remove(struct ps3_system_bus_device * dev)1047 static void snd_ps3_driver_remove(struct ps3_system_bus_device *dev)
1048 {
1049 pr_info("%s:start id=%d\n", __func__, dev->match_id);
1050
1051 /*
1052 * ctl and preallocate buffer will be freed in
1053 * snd_card_free
1054 */
1055 snd_card_free(the_card.card);
1056
1057 dma_free_coherent(&dev->core,
1058 PAGE_SIZE,
1059 the_card.null_buffer_start_vaddr,
1060 the_card.null_buffer_start_dma_addr);
1061
1062 ps3_dma_region_free(dev->d_region);
1063
1064 snd_ps3_free_irq();
1065 snd_ps3_unmap_mmio();
1066
1067 lv1_gpu_device_unmap(2);
1068 ps3_close_hv_device(dev);
1069 pr_info("%s:end id=%d\n", __func__, dev->match_id);
1070 } /* snd_ps3_remove */
1071
1072 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = {
1073 .match_id = PS3_MATCH_ID_SOUND,
1074 .probe = snd_ps3_driver_probe,
1075 .remove = snd_ps3_driver_remove,
1076 .shutdown = snd_ps3_driver_remove,
1077 .core = {
1078 .name = SND_PS3_DRIVER_NAME,
1079 .owner = THIS_MODULE,
1080 },
1081 };
1082
1083
1084 /*
1085 * module/subsystem initialize/terminate
1086 */
snd_ps3_init(void)1087 static int __init snd_ps3_init(void)
1088 {
1089 int ret;
1090
1091 if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
1092 return -ENXIO;
1093
1094 memset(&the_card, 0, sizeof(the_card));
1095 spin_lock_init(&the_card.dma_lock);
1096
1097 /* register systembus DRIVER, this calls our probe() func */
1098 ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info);
1099
1100 return ret;
1101 }
1102 module_init(snd_ps3_init);
1103
snd_ps3_exit(void)1104 static void __exit snd_ps3_exit(void)
1105 {
1106 ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
1107 }
1108 module_exit(snd_ps3_exit);
1109
1110 MODULE_LICENSE("GPL v2");
1111 MODULE_DESCRIPTION("PS3 sound driver");
1112 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
1113 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);
1114