Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6
[sfrench/cifs-2.6.git] / sound / ppc / snd_ps3.c
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 const static 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
670         ret = snd_ps3_change_avsetting(card);
671
672         snd_ps3_audio_fixup(card);
673
674         /* to start to generate SPDIF signal, fill data */
675         snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
676         snd_ps3_kick_dma(card);
677         pr_debug("%s: end\n", __func__);
678         return ret;
679 }
680
681 /*
682  *  set sampling rate according to the substream
683  */
684 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
685 {
686         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
687         struct snd_ps3_avsetting_info avs;
688
689         avs = card->avs;
690
691         pr_debug("%s: called freq=%d width=%d\n", __func__,
692                  substream->runtime->rate,
693                  snd_pcm_format_width(substream->runtime->format));
694
695         pr_debug("%s: before freq=%d width=%d\n", __func__,
696                  card->avs.avs_audio_rate, card->avs.avs_audio_width);
697
698         /* sample rate */
699         switch (substream->runtime->rate) {
700         case 44100:
701                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
702                 break;
703         case 48000:
704                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
705                 break;
706         case 88200:
707                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
708                 break;
709         case 96000:
710                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
711                 break;
712         default:
713                 pr_info("%s: invalid rate %d\n", __func__,
714                         substream->runtime->rate);
715                 return 1;
716         }
717
718         /* width */
719         switch (snd_pcm_format_width(substream->runtime->format)) {
720         case 16:
721                 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
722                 break;
723         case 24:
724                 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
725                 break;
726         default:
727                 pr_info("%s: invalid width %d\n", __func__,
728                         snd_pcm_format_width(substream->runtime->format));
729                 return 1;
730         }
731
732         if ((card->avs.avs_audio_width != avs.avs_audio_width) ||
733             (card->avs.avs_audio_rate != avs.avs_audio_rate)) {
734                 card->avs = avs;
735                 snd_ps3_change_avsetting(card);
736
737                 pr_debug("%s: after freq=%d width=%d\n", __func__,
738                          card->avs.avs_audio_rate, card->avs.avs_audio_width);
739
740                 return 0;
741         } else
742                 return 1;
743 }
744
745
746
747 static int snd_ps3_map_mmio(void)
748 {
749         the_card.mapped_mmio_vaddr =
750                 ioremap(the_card.ps3_dev->m_region->bus_addr,
751                         the_card.ps3_dev->m_region->len);
752
753         if (!the_card.mapped_mmio_vaddr) {
754                 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
755                        __func__, the_card.ps3_dev->m_region->lpar_addr,
756                        the_card.ps3_dev->m_region->len);
757                 return -ENXIO;
758         }
759
760         return 0;
761 };
762
763 static void snd_ps3_unmap_mmio(void)
764 {
765         iounmap(the_card.mapped_mmio_vaddr);
766         the_card.mapped_mmio_vaddr = NULL;
767 }
768
769 static int snd_ps3_allocate_irq(void)
770 {
771         int ret;
772         u64 lpar_addr, lpar_size;
773         u64 __iomem *mapped;
774
775         /* FIXME: move this to device_init (H/W probe) */
776
777         /* get irq outlet */
778         ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
779         if (ret) {
780                 pr_info("%s: device map 1 failed %d\n", __func__,
781                         ret);
782                 return -ENXIO;
783         }
784
785         mapped = ioremap(lpar_addr, lpar_size);
786         if (!mapped) {
787                 pr_info("%s: ioremap 1 failed \n", __func__);
788                 return -ENXIO;
789         }
790
791         the_card.audio_irq_outlet = in_be64(mapped);
792
793         iounmap(mapped);
794         ret = lv1_gpu_device_unmap(1);
795         if (ret)
796                 pr_info("%s: unmap 1 failed\n", __func__);
797
798         /* irq */
799         ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
800                                  the_card.audio_irq_outlet,
801                                  &the_card.irq_no);
802         if (ret) {
803                 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
804                 return ret;
805         }
806
807         ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
808                           SND_PS3_DRIVER_NAME, &the_card);
809         if (ret) {
810                 pr_info("%s: request_irq failed (%d)\n", __func__, ret);
811                 goto cleanup_irq;
812         }
813
814         return 0;
815
816  cleanup_irq:
817         ps3_irq_plug_destroy(the_card.irq_no);
818         return ret;
819 };
820
821 static void snd_ps3_free_irq(void)
822 {
823         free_irq(the_card.irq_no, &the_card);
824         ps3_irq_plug_destroy(the_card.irq_no);
825 }
826
827 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
828 {
829         uint64_t val;
830         int ret;
831
832         val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
833                 (0x03UL << 24) |
834                 (0x0fUL << 12) |
835                 (PS3_AUDIO_IOID);
836
837         ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);
838         if (ret)
839                 pr_info("%s: gpu_attribute failed %d\n", __func__,
840                         ret);
841 }
842
843 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
844 {
845         int ret;
846         u64 lpar_addr, lpar_size;
847
848         BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1));
849         BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND);
850
851         the_card.ps3_dev = dev;
852
853         ret = ps3_open_hv_device(dev);
854
855         if (ret)
856                 return -ENXIO;
857
858         /* setup MMIO */
859         ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
860         if (ret) {
861                 pr_info("%s: device map 2 failed %d\n", __func__, ret);
862                 goto clean_open;
863         }
864         ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
865                 PAGE_SHIFT);
866
867         ret = snd_ps3_map_mmio();
868         if (ret)
869                 goto clean_dev_map;
870
871         /* setup DMA area */
872         ps3_dma_region_init(dev, dev->d_region,
873                             PAGE_SHIFT, /* use system page size */
874                             0, /* dma type; not used */
875                             NULL,
876                             _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
877         dev->d_region->ioid = PS3_AUDIO_IOID;
878
879         ret = ps3_dma_region_create(dev->d_region);
880         if (ret) {
881                 pr_info("%s: region_create\n", __func__);
882                 goto clean_mmio;
883         }
884
885         snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
886
887         /* CONFIG_SND_PS3_DEFAULT_START_DELAY */
888         the_card.start_delay = snd_ps3_start_delay;
889
890         /* irq */
891         if (snd_ps3_allocate_irq()) {
892                 ret = -ENXIO;
893                 goto clean_dma_region;
894         }
895
896         /* create card instance */
897         the_card.card = snd_card_new(index, id, THIS_MODULE, 0);
898         if (!the_card.card) {
899                 ret = -ENXIO;
900                 goto clean_irq;
901         }
902
903         strcpy(the_card.card->driver, "PS3");
904         strcpy(the_card.card->shortname, "PS3");
905         strcpy(the_card.card->longname, "PS3 sound");
906         /* create PCM devices instance */
907         /* NOTE:this driver works assuming pcm:substream = 1:1 */
908         ret = snd_pcm_new(the_card.card,
909                           "SPDIF",
910                           0, /* instance index, will be stored pcm.device*/
911                           1, /* output substream */
912                           0, /* input substream */
913                           &(the_card.pcm));
914         if (ret)
915                 goto clean_card;
916
917         the_card.pcm->private_data = &the_card;
918         strcpy(the_card.pcm->name, "SPDIF");
919
920         /* set pcm ops */
921         snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
922                         &snd_ps3_pcm_spdif_ops);
923
924         the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
925         /* pre-alloc PCM DMA buffer*/
926         ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
927                                         SNDRV_DMA_TYPE_DEV,
928                                         &dev->core,
929                                         SND_PS3_PCM_PREALLOC_SIZE,
930                                         SND_PS3_PCM_PREALLOC_SIZE);
931         if (ret < 0) {
932                 pr_info("%s: prealloc failed\n", __func__);
933                 goto clean_card;
934         }
935
936         /*
937          * allocate null buffer
938          * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
939          * PAGE_SIZE is enogh
940          */
941         if (!(the_card.null_buffer_start_vaddr =
942               dma_alloc_coherent(&the_card.ps3_dev->core,
943                                  PAGE_SIZE,
944                                  &the_card.null_buffer_start_dma_addr,
945                                  GFP_KERNEL))) {
946                 pr_info("%s: nullbuffer alloc failed\n", __func__);
947                 goto clean_preallocate;
948         }
949         pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__,
950                  the_card.null_buffer_start_vaddr,
951                  the_card.null_buffer_start_dma_addr);
952         /* set default sample rate/word width */
953         snd_ps3_init_avsetting(&the_card);
954
955         /* register the card */
956         snd_card_set_dev(the_card.card, &dev->core);
957         ret = snd_card_register(the_card.card);
958         if (ret < 0)
959                 goto clean_dma_map;
960
961         pr_info("%s started. start_delay=%dms\n",
962                 the_card.card->longname, the_card.start_delay);
963         return 0;
964
965 clean_dma_map:
966         dma_free_coherent(&the_card.ps3_dev->core,
967                           PAGE_SIZE,
968                           the_card.null_buffer_start_vaddr,
969                           the_card.null_buffer_start_dma_addr);
970 clean_preallocate:
971         snd_pcm_lib_preallocate_free_for_all(the_card.pcm);
972 clean_card:
973         snd_card_free(the_card.card);
974 clean_irq:
975         snd_ps3_free_irq();
976 clean_dma_region:
977         ps3_dma_region_free(dev->d_region);
978 clean_mmio:
979         snd_ps3_unmap_mmio();
980 clean_dev_map:
981         lv1_gpu_device_unmap(2);
982 clean_open:
983         ps3_close_hv_device(dev);
984         /*
985          * there is no destructor function to pcm.
986          * midlayer automatically releases if the card removed
987          */
988         return ret;
989 }; /* snd_ps3_probe */
990
991 /* called when module removal */
992 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev)
993 {
994         int ret;
995         pr_info("%s:start id=%d\n", __func__,  dev->match_id);
996         if (dev->match_id != PS3_MATCH_ID_SOUND)
997                 return -ENXIO;
998
999         /*
1000          * ctl and preallocate buffer will be freed in
1001          * snd_card_free
1002          */
1003         ret = snd_card_free(the_card.card);
1004         if (ret)
1005                 pr_info("%s: ctl freecard=%d\n", __func__, ret);
1006
1007         dma_free_coherent(&dev->core,
1008                           PAGE_SIZE,
1009                           the_card.null_buffer_start_vaddr,
1010                           the_card.null_buffer_start_dma_addr);
1011
1012         ps3_dma_region_free(dev->d_region);
1013
1014         snd_ps3_free_irq();
1015         snd_ps3_unmap_mmio();
1016
1017         lv1_gpu_device_unmap(2);
1018         ps3_close_hv_device(dev);
1019         pr_info("%s:end id=%d\n", __func__, dev->match_id);
1020         return 0;
1021 } /* snd_ps3_remove */
1022
1023 static struct ps3_system_bus_driver snd_ps3_bus_driver_info = {
1024         .match_id = PS3_MATCH_ID_SOUND,
1025         .probe = snd_ps3_driver_probe,
1026         .remove = snd_ps3_driver_remove,
1027         .shutdown = snd_ps3_driver_remove,
1028         .core = {
1029                 .name = SND_PS3_DRIVER_NAME,
1030                 .owner = THIS_MODULE,
1031         },
1032 };
1033
1034
1035 /*
1036  * Interrupt handler
1037  */
1038 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id)
1039 {
1040
1041         uint32_t port_intr;
1042         int underflow_occured = 0;
1043         struct snd_ps3_card_info *card = dev_id;
1044
1045         if (!card->running) {
1046                 update_reg(PS3_AUDIO_AX_IS, 0);
1047                 update_reg(PS3_AUDIO_INTR_0, 0);
1048                 return IRQ_HANDLED;
1049         }
1050
1051         port_intr = read_reg(PS3_AUDIO_AX_IS);
1052         /*
1053          *serial buffer empty detected (every 4 times),
1054          *program next dma and kick it
1055          */
1056         if (port_intr & PS3_AUDIO_AX_IE_ASOBEIE(0)) {
1057                 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBEIE(0));
1058                 if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1059                         write_reg(PS3_AUDIO_AX_IS, port_intr);
1060                         underflow_occured = 1;
1061                 }
1062                 if (card->silent) {
1063                         /* we are still in silent time */
1064                         snd_ps3_program_dma(card,
1065                                 (underflow_occured) ?
1066                                 SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL :
1067                                 SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
1068                         snd_ps3_kick_dma(card);
1069                         card->silent --;
1070                 } else {
1071                         snd_ps3_program_dma(card,
1072                                 (underflow_occured) ?
1073                                 SND_PS3_DMA_FILLTYPE_FIRSTFILL :
1074                                 SND_PS3_DMA_FILLTYPE_RUNNING);
1075                         snd_ps3_kick_dma(card);
1076                         snd_pcm_period_elapsed(card->substream);
1077                 }
1078         } else if (port_intr & PS3_AUDIO_AX_IE_ASOBUIE(0)) {
1079                 write_reg(PS3_AUDIO_AX_IS, PS3_AUDIO_AX_IE_ASOBUIE(0));
1080                 /*
1081                  * serial out underflow, but buffer empty not detected.
1082                  * in this case, fill fifo with 0 to recover.  After
1083                  * filling dummy data, serial automatically start to
1084                  * consume them and then will generate normal buffer
1085                  * empty interrupts.
1086                  * If both buffer underflow and buffer empty are occured,
1087                  * it is better to do nomal data transfer than empty one
1088                  */
1089                 snd_ps3_program_dma(card,
1090                                     SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1091                 snd_ps3_kick_dma(card);
1092                 snd_ps3_program_dma(card,
1093                                     SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
1094                 snd_ps3_kick_dma(card);
1095         }
1096         /* clear interrupt cause */
1097         return IRQ_HANDLED;
1098 };
1099
1100 /*
1101  * module/subsystem initialize/terminate
1102  */
1103 static int __init snd_ps3_init(void)
1104 {
1105         int ret;
1106
1107         if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
1108                 return -ENXIO;
1109
1110         memset(&the_card, 0, sizeof(the_card));
1111         spin_lock_init(&the_card.dma_lock);
1112
1113         /* register systembus DRIVER, this calls our probe() func */
1114         ret = ps3_system_bus_driver_register(&snd_ps3_bus_driver_info);
1115
1116         return ret;
1117 }
1118
1119 static void __exit snd_ps3_exit(void)
1120 {
1121         ps3_system_bus_driver_unregister(&snd_ps3_bus_driver_info);
1122 }
1123
1124 MODULE_ALIAS(PS3_MODULE_ALIAS_SOUND);