[ALSA] cmipci: allow 96 kHz playback on non-multichannel rear
[linux-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/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 <asm/dma.h>
37 #include <asm/lv1call.h>
38 #include <asm/ps3.h>
39 #include <asm/ps3av.h>
40
41 #include "snd_ps3_reg.h"
42 #include "snd_ps3.h"
43
44 MODULE_LICENSE("GPL v2");
45 MODULE_DESCRIPTION("PS3 sound driver");
46 MODULE_AUTHOR("Sony Computer Entertainment Inc.");
47
48 /* module  entries */
49 static int __init snd_ps3_init(void);
50 static void __exit snd_ps3_exit(void);
51
52 /* ALSA snd driver ops */
53 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream);
54 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream);
55 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream);
56 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
57                                  int cmd);
58 static snd_pcm_uframes_t snd_ps3_pcm_pointer(struct snd_pcm_substream
59                                              *substream);
60 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
61                                  struct snd_pcm_hw_params *hw_params);
62 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream);
63
64
65 /* ps3_system_bus_driver entries */
66 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev);
67 static int snd_ps3_driver_remove(struct ps3_system_bus_device *dev);
68
69 /* address setup */
70 static int snd_ps3_map_mmio(void);
71 static void snd_ps3_unmap_mmio(void);
72 static int snd_ps3_allocate_irq(void);
73 static void snd_ps3_free_irq(void);
74 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start);
75
76 /* interrupt handler */
77 static irqreturn_t snd_ps3_interrupt(int irq, void *dev_id);
78
79
80 /* set sampling rate/format */
81 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream);
82 /* take effect parameter change */
83 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card);
84 /* initialize avsetting and take it effect */
85 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card);
86 /* setup dma */
87 static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
88                                enum snd_ps3_dma_filltype filltype);
89 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card);
90
91 static dma_addr_t v_to_bus(struct snd_ps3_card_info *, void  *vaddr, int ch);
92
93
94 module_init(snd_ps3_init);
95 module_exit(snd_ps3_exit);
96
97 /*
98  * global
99  */
100 static struct snd_ps3_card_info the_card;
101
102 static int snd_ps3_start_delay = CONFIG_SND_PS3_DEFAULT_START_DELAY;
103
104 module_param_named(start_delay, snd_ps3_start_delay, uint, 0644);
105 MODULE_PARM_DESC(start_delay, "time to insert silent data in milisec");
106
107 static int index = SNDRV_DEFAULT_IDX1;
108 static char *id = SNDRV_DEFAULT_STR1;
109
110 module_param(index, int, 0444);
111 MODULE_PARM_DESC(index, "Index value for PS3 soundchip.");
112 module_param(id, charp, 0444);
113 MODULE_PARM_DESC(id, "ID string for PS3 soundchip.");
114
115
116 /*
117  * PS3 audio register access
118  */
119 static inline u32 read_reg(unsigned int reg)
120 {
121         return in_be32(the_card.mapped_mmio_vaddr + reg);
122 }
123 static inline void write_reg(unsigned int reg, u32 val)
124 {
125         out_be32(the_card.mapped_mmio_vaddr + reg, val);
126 }
127 static inline void update_reg(unsigned int reg, u32 or_val)
128 {
129         u32 newval = read_reg(reg) | or_val;
130         write_reg(reg, newval);
131 }
132 static inline void update_mask_reg(unsigned int reg, u32 mask, u32 or_val)
133 {
134         u32 newval = (read_reg(reg) & mask) | or_val;
135         write_reg(reg, newval);
136 }
137
138 /*
139  * ALSA defs
140  */
141 const static struct snd_pcm_hardware snd_ps3_pcm_hw = {
142         .info = (SNDRV_PCM_INFO_MMAP |
143                  SNDRV_PCM_INFO_NONINTERLEAVED |
144                  SNDRV_PCM_INFO_MMAP_VALID),
145         .formats = (SNDRV_PCM_FMTBIT_S16_BE |
146                     SNDRV_PCM_FMTBIT_S24_BE),
147         .rates = (SNDRV_PCM_RATE_44100 |
148                   SNDRV_PCM_RATE_48000 |
149                   SNDRV_PCM_RATE_88200 |
150                   SNDRV_PCM_RATE_96000),
151         .rate_min = 44100,
152         .rate_max = 96000,
153
154         .channels_min = 2, /* stereo only */
155         .channels_max = 2,
156
157         .buffer_bytes_max = PS3_AUDIO_FIFO_SIZE * 64,
158
159         /* interrupt by four stages */
160         .period_bytes_min = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
161         .period_bytes_max = PS3_AUDIO_FIFO_STAGE_SIZE * 4,
162
163         .periods_min = 16,
164         .periods_max = 32, /* buffer_size_max/ period_bytes_max */
165
166         .fifo_size = PS3_AUDIO_FIFO_SIZE
167 };
168
169 static struct snd_pcm_ops snd_ps3_pcm_spdif_ops =
170 {
171         .open = snd_ps3_pcm_open,
172         .close = snd_ps3_pcm_close,
173         .prepare = snd_ps3_pcm_prepare,
174         .ioctl = snd_pcm_lib_ioctl,
175         .trigger = snd_ps3_pcm_trigger,
176         .pointer = snd_ps3_pcm_pointer,
177         .hw_params = snd_ps3_pcm_hw_params,
178         .hw_free = snd_ps3_pcm_hw_free
179 };
180
181 static int snd_ps3_verify_dma_stop(struct snd_ps3_card_info *card,
182                                    int count, int force_stop)
183 {
184         int dma_ch, done, retries, stop_forced = 0;
185         uint32_t status;
186
187         for (dma_ch = 0; dma_ch < 8; dma_ch ++) {
188                 retries = count;
189                 do {
190                         status = read_reg(PS3_AUDIO_KICK(dma_ch)) &
191                                 PS3_AUDIO_KICK_STATUS_MASK;
192                         switch (status) {
193                         case PS3_AUDIO_KICK_STATUS_DONE:
194                         case PS3_AUDIO_KICK_STATUS_NOTIFY:
195                         case PS3_AUDIO_KICK_STATUS_CLEAR:
196                         case PS3_AUDIO_KICK_STATUS_ERROR:
197                                 done = 1;
198                                 break;
199                         default:
200                                 done = 0;
201                                 udelay(10);
202                         }
203                 } while (!done && --retries);
204                 if (!retries && force_stop) {
205                         pr_info("%s: DMA ch %d is not stopped.",
206                                 __func__, dma_ch);
207                         /* last resort. force to stop dma.
208                          *  NOTE: this cause DMA done interrupts
209                          */
210                         update_reg(PS3_AUDIO_CONFIG, PS3_AUDIO_CONFIG_CLEAR);
211                         stop_forced = 1;
212                 }
213         }
214         return stop_forced;
215 }
216
217 /*
218  * wait for all dma is done.
219  * NOTE: caller should reset card->running before call.
220  *       If not, the interrupt handler will re-start DMA,
221  *       then DMA is never stopped.
222  */
223 static void snd_ps3_wait_for_dma_stop(struct snd_ps3_card_info *card)
224 {
225         int stop_forced;
226         /*
227          * wait for the last dma is done
228          */
229
230         /*
231          * expected maximum DMA done time is 5.7ms + something (DMA itself).
232          * 5.7ms is from 16bit/sample 2ch 44.1Khz; the time next
233          * DMA kick event would occur.
234          */
235         stop_forced = snd_ps3_verify_dma_stop(card, 700, 1);
236
237         /*
238          * clear outstanding interrupts.
239          */
240         update_reg(PS3_AUDIO_INTR_0, 0);
241         update_reg(PS3_AUDIO_AX_IS, 0);
242
243         /*
244          *revert CLEAR bit since it will not reset automatically after DMA stop
245          */
246         if (stop_forced)
247                 update_mask_reg(PS3_AUDIO_CONFIG, ~PS3_AUDIO_CONFIG_CLEAR, 0);
248         /* ensure the hardware sees changes */
249         wmb();
250 }
251
252 static void snd_ps3_kick_dma(struct snd_ps3_card_info *card)
253 {
254
255         update_reg(PS3_AUDIO_KICK(0), PS3_AUDIO_KICK_REQUEST);
256         /* ensure the hardware sees the change */
257         wmb();
258 }
259
260 /*
261  * convert virtual addr to ioif bus addr.
262  */
263 static dma_addr_t v_to_bus(struct snd_ps3_card_info *card,
264                            void * paddr,
265                            int ch)
266 {
267         return card->dma_start_bus_addr[ch] +
268                 (paddr - card->dma_start_vaddr[ch]);
269 };
270
271
272 /*
273  * increment ring buffer pointer.
274  * NOTE: caller must hold write spinlock
275  */
276 static void snd_ps3_bump_buffer(struct snd_ps3_card_info *card,
277                                 enum snd_ps3_ch ch, size_t byte_count,
278                                 int stage)
279 {
280         if (!stage)
281                 card->dma_last_transfer_vaddr[ch] =
282                         card->dma_next_transfer_vaddr[ch];
283         card->dma_next_transfer_vaddr[ch] += byte_count;
284         if ((card->dma_start_vaddr[ch] + (card->dma_buffer_size / 2)) <=
285             card->dma_next_transfer_vaddr[ch]) {
286                 card->dma_next_transfer_vaddr[ch] = card->dma_start_vaddr[ch];
287         }
288 }
289 /*
290  * setup dmac to send data to audio and attenuate samples on the ring buffer
291  */
292 static int snd_ps3_program_dma(struct snd_ps3_card_info *card,
293                                enum snd_ps3_dma_filltype filltype)
294 {
295         /* this dmac does not support over 4G */
296         uint32_t dma_addr;
297         int fill_stages, dma_ch, stage;
298         enum snd_ps3_ch ch;
299         uint32_t ch0_kick_event = 0; /* initialize to mute gcc */
300         void *start_vaddr;
301         unsigned long irqsave;
302         int silent = 0;
303
304         switch (filltype) {
305         case SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL:
306                 silent = 1;
307                 /* intentionally fall thru */
308         case SND_PS3_DMA_FILLTYPE_FIRSTFILL:
309                 ch0_kick_event = PS3_AUDIO_KICK_EVENT_ALWAYS;
310                 break;
311
312         case SND_PS3_DMA_FILLTYPE_SILENT_RUNNING:
313                 silent = 1;
314                 /* intentionally fall thru */
315         case SND_PS3_DMA_FILLTYPE_RUNNING:
316                 ch0_kick_event = PS3_AUDIO_KICK_EVENT_SERIALOUT0_EMPTY;
317                 break;
318         }
319
320         snd_ps3_verify_dma_stop(card, 700, 0);
321         fill_stages = 4;
322         spin_lock_irqsave(&card->dma_lock, irqsave);
323         for (ch = 0; ch < 2; ch++) {
324                 start_vaddr = card->dma_next_transfer_vaddr[0];
325                 for (stage = 0; stage < fill_stages; stage ++) {
326                         dma_ch = stage * 2 + ch;
327                         if (silent)
328                                 dma_addr = card->null_buffer_start_dma_addr;
329                         else
330                                 dma_addr =
331                                 v_to_bus(card,
332                                          card->dma_next_transfer_vaddr[ch],
333                                          ch);
334
335                         write_reg(PS3_AUDIO_SOURCE(dma_ch),
336                                   (PS3_AUDIO_SOURCE_TARGET_SYSTEM_MEMORY |
337                                    dma_addr));
338
339                         /* dst: fixed to 3wire#0 */
340                         if (ch == 0)
341                                 write_reg(PS3_AUDIO_DEST(dma_ch),
342                                           (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
343                                            PS3_AUDIO_AO_3W_LDATA(0)));
344                         else
345                                 write_reg(PS3_AUDIO_DEST(dma_ch),
346                                           (PS3_AUDIO_DEST_TARGET_AUDIOFIFO |
347                                            PS3_AUDIO_AO_3W_RDATA(0)));
348
349                         /* count always 1 DMA block (1/2 stage = 128 bytes) */
350                         write_reg(PS3_AUDIO_DMASIZE(dma_ch), 0);
351                         /* bump pointer if needed */
352                         if (!silent)
353                                 snd_ps3_bump_buffer(card, ch,
354                                                     PS3_AUDIO_DMAC_BLOCK_SIZE,
355                                                     stage);
356
357                         /* kick event  */
358                         if (dma_ch == 0)
359                                 write_reg(PS3_AUDIO_KICK(dma_ch),
360                                           ch0_kick_event);
361                         else
362                                 write_reg(PS3_AUDIO_KICK(dma_ch),
363                                           PS3_AUDIO_KICK_EVENT_AUDIO_DMA(dma_ch
364                                                                          - 1) |
365                                           PS3_AUDIO_KICK_REQUEST);
366                 }
367         }
368         /* ensure the hardware sees the change */
369         wmb();
370         spin_unlock_irqrestore(&card->dma_lock, irqsave);
371
372         return 0;
373 }
374
375 /*
376  * audio mute on/off
377  * mute_on : 0 output enabled
378  *           1 mute
379  */
380 static int snd_ps3_mute(int mute_on)
381 {
382         return ps3av_audio_mute(mute_on);
383 }
384
385 /*
386  * PCM operators
387  */
388 static int snd_ps3_pcm_open(struct snd_pcm_substream *substream)
389 {
390         struct snd_pcm_runtime *runtime = substream->runtime;
391         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
392         int pcm_index;
393
394         pcm_index = substream->pcm->device;
395         /* to retrieve substream/runtime in interrupt handler */
396         card->substream = substream;
397
398         runtime->hw = snd_ps3_pcm_hw;
399
400         card->start_delay = snd_ps3_start_delay;
401
402         /* mute off */
403         snd_ps3_mute(0); /* this function sleep */
404
405         snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
406                                    PS3_AUDIO_FIFO_STAGE_SIZE * 4 * 2);
407         return 0;
408 };
409
410 static int snd_ps3_pcm_hw_params(struct snd_pcm_substream *substream,
411                                  struct snd_pcm_hw_params *hw_params)
412 {
413         size_t size;
414
415         /* alloc transport buffer */
416         size = params_buffer_bytes(hw_params);
417         snd_pcm_lib_malloc_pages(substream, size);
418         return 0;
419 };
420
421 static int snd_ps3_delay_to_bytes(struct snd_pcm_substream *substream,
422                                   unsigned int delay_ms)
423 {
424         int ret;
425         int rate ;
426
427         rate = substream->runtime->rate;
428         ret = snd_pcm_format_size(substream->runtime->format,
429                                   rate * delay_ms / 1000)
430                 * substream->runtime->channels;
431
432         pr_debug(KERN_ERR "%s: time=%d rate=%d bytes=%ld, frames=%d, ret=%d\n",
433                  __func__,
434                  delay_ms,
435                  rate,
436                  snd_pcm_format_size(substream->runtime->format, rate),
437                  rate * delay_ms / 1000,
438                  ret);
439
440         return ret;
441 };
442
443 static int snd_ps3_pcm_prepare(struct snd_pcm_substream *substream)
444 {
445         struct snd_pcm_runtime *runtime = substream->runtime;
446         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
447         unsigned long irqsave;
448
449         if (!snd_ps3_set_avsetting(substream)) {
450                 /* some parameter changed */
451                 write_reg(PS3_AUDIO_AX_IE,
452                           PS3_AUDIO_AX_IE_ASOBEIE(0) |
453                           PS3_AUDIO_AX_IE_ASOBUIE(0));
454                 /*
455                  * let SPDIF device re-lock with SPDIF signal,
456                  * start with some silence
457                  */
458                 card->silent = snd_ps3_delay_to_bytes(substream,
459                                                       card->start_delay) /
460                         (PS3_AUDIO_FIFO_STAGE_SIZE * 4); /* every 4 times */
461         }
462
463         /* restart ring buffer pointer */
464         spin_lock_irqsave(&card->dma_lock, irqsave);
465         {
466                 card->dma_buffer_size = runtime->dma_bytes;
467
468                 card->dma_last_transfer_vaddr[SND_PS3_CH_L] =
469                         card->dma_next_transfer_vaddr[SND_PS3_CH_L] =
470                         card->dma_start_vaddr[SND_PS3_CH_L] =
471                         runtime->dma_area;
472                 card->dma_start_bus_addr[SND_PS3_CH_L] = runtime->dma_addr;
473
474                 card->dma_last_transfer_vaddr[SND_PS3_CH_R] =
475                         card->dma_next_transfer_vaddr[SND_PS3_CH_R] =
476                         card->dma_start_vaddr[SND_PS3_CH_R] =
477                         runtime->dma_area + (runtime->dma_bytes / 2);
478                 card->dma_start_bus_addr[SND_PS3_CH_R] =
479                         runtime->dma_addr + (runtime->dma_bytes / 2);
480
481                 pr_debug("%s: vaddr=%p bus=%#lx\n", __func__,
482                          card->dma_start_vaddr[SND_PS3_CH_L],
483                          card->dma_start_bus_addr[SND_PS3_CH_L]);
484
485         }
486         spin_unlock_irqrestore(&card->dma_lock, irqsave);
487
488         /* ensure the hardware sees the change */
489         mb();
490
491         return 0;
492 };
493
494 static int snd_ps3_pcm_trigger(struct snd_pcm_substream *substream,
495                                int cmd)
496 {
497         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
498         int ret = 0;
499
500         switch (cmd) {
501         case SNDRV_PCM_TRIGGER_START:
502                 /* clear outstanding interrupts  */
503                 update_reg(PS3_AUDIO_AX_IS, 0);
504
505                 spin_lock(&card->dma_lock);
506                 {
507                         card->running = 1;
508                 }
509                 spin_unlock(&card->dma_lock);
510
511                 snd_ps3_program_dma(card,
512                                     SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
513                 snd_ps3_kick_dma(card);
514                 while (read_reg(PS3_AUDIO_KICK(7)) &
515                        PS3_AUDIO_KICK_STATUS_MASK) {
516                         udelay(1);
517                 }
518                 snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_RUNNING);
519                 snd_ps3_kick_dma(card);
520                 break;
521
522         case SNDRV_PCM_TRIGGER_STOP:
523                 spin_lock(&card->dma_lock);
524                 {
525                         card->running = 0;
526                 }
527                 spin_unlock(&card->dma_lock);
528                 snd_ps3_wait_for_dma_stop(card);
529                 break;
530         default:
531                 break;
532
533         }
534
535         return ret;
536 };
537
538 /*
539  * report current pointer
540  */
541 static snd_pcm_uframes_t snd_ps3_pcm_pointer(
542         struct snd_pcm_substream *substream)
543 {
544         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
545         size_t bytes;
546         snd_pcm_uframes_t ret;
547
548         spin_lock(&card->dma_lock);
549         {
550                 bytes = (size_t)(card->dma_last_transfer_vaddr[SND_PS3_CH_L] -
551                                  card->dma_start_vaddr[SND_PS3_CH_L]);
552         }
553         spin_unlock(&card->dma_lock);
554
555         ret = bytes_to_frames(substream->runtime, bytes * 2);
556
557         return ret;
558 };
559
560 static int snd_ps3_pcm_hw_free(struct snd_pcm_substream *substream)
561 {
562         int ret;
563         ret = snd_pcm_lib_free_pages(substream);
564         return ret;
565 };
566
567 static int snd_ps3_pcm_close(struct snd_pcm_substream *substream)
568 {
569         /* mute on */
570         snd_ps3_mute(1);
571         return 0;
572 };
573
574 static void snd_ps3_audio_fixup(struct snd_ps3_card_info *card)
575 {
576         /*
577          * avsetting driver seems to never change the followings
578          * so, init them here once
579          */
580
581         /* no dma interrupt needed */
582         write_reg(PS3_AUDIO_INTR_EN_0, 0);
583
584         /* use every 4 buffer empty interrupt */
585         update_mask_reg(PS3_AUDIO_AX_IC,
586                         PS3_AUDIO_AX_IC_AASOIMD_MASK,
587                         PS3_AUDIO_AX_IC_AASOIMD_EVERY4);
588
589         /* enable 3wire clocks */
590         update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
591                         ~(PS3_AUDIO_AO_3WMCTRL_ASOBCLKD_DISABLED |
592                           PS3_AUDIO_AO_3WMCTRL_ASOLRCKD_DISABLED),
593                         0);
594         update_reg(PS3_AUDIO_AO_3WMCTRL,
595                    PS3_AUDIO_AO_3WMCTRL_ASOPLRCK_DEFAULT);
596 }
597
598 /*
599  * av setting
600  * NOTE: calling this function may generate audio interrupt.
601  */
602 static int snd_ps3_change_avsetting(struct snd_ps3_card_info *card)
603 {
604         int ret, retries, i;
605         pr_debug("%s: start\n", __func__);
606
607         ret = ps3av_set_audio_mode(card->avs.avs_audio_ch,
608                                   card->avs.avs_audio_rate,
609                                   card->avs.avs_audio_width,
610                                   card->avs.avs_audio_format,
611                                   card->avs.avs_audio_source);
612         /*
613          * Reset the following unwanted settings:
614          */
615
616         /* disable all 3wire buffers */
617         update_mask_reg(PS3_AUDIO_AO_3WMCTRL,
618                         ~(PS3_AUDIO_AO_3WMCTRL_ASOEN(0) |
619                           PS3_AUDIO_AO_3WMCTRL_ASOEN(1) |
620                           PS3_AUDIO_AO_3WMCTRL_ASOEN(2) |
621                           PS3_AUDIO_AO_3WMCTRL_ASOEN(3)),
622                         0);
623         wmb();  /* ensure the hardware sees the change */
624         /* wait for actually stopped */
625         retries = 1000;
626         while ((read_reg(PS3_AUDIO_AO_3WMCTRL) &
627                 (PS3_AUDIO_AO_3WMCTRL_ASORUN(0) |
628                  PS3_AUDIO_AO_3WMCTRL_ASORUN(1) |
629                  PS3_AUDIO_AO_3WMCTRL_ASORUN(2) |
630                  PS3_AUDIO_AO_3WMCTRL_ASORUN(3))) &&
631                --retries) {
632                 udelay(1);
633         }
634
635         /* reset buffer pointer */
636         for (i = 0; i < 4; i++) {
637                 update_reg(PS3_AUDIO_AO_3WCTRL(i),
638                            PS3_AUDIO_AO_3WCTRL_ASOBRST_RESET);
639                 udelay(10);
640         }
641         wmb(); /* ensure the hardware actually start resetting */
642
643         /* enable 3wire#0 buffer */
644         update_reg(PS3_AUDIO_AO_3WMCTRL, PS3_AUDIO_AO_3WMCTRL_ASOEN(0));
645
646
647         /* In 24bit mode,ALSA inserts a zero byte at first byte of per sample */
648         update_mask_reg(PS3_AUDIO_AO_3WCTRL(0),
649                         ~PS3_AUDIO_AO_3WCTRL_ASODF,
650                         PS3_AUDIO_AO_3WCTRL_ASODF_LSB);
651         update_mask_reg(PS3_AUDIO_AO_SPDCTRL(0),
652                         ~PS3_AUDIO_AO_SPDCTRL_SPODF,
653                         PS3_AUDIO_AO_SPDCTRL_SPODF_LSB);
654         /* ensure all the setting above is written back to register */
655         wmb();
656         /* avsetting driver altered AX_IE, caller must reset it if you want */
657         pr_debug("%s: end\n", __func__);
658         return ret;
659 }
660
661 static int snd_ps3_init_avsetting(struct snd_ps3_card_info *card)
662 {
663         int ret;
664         pr_debug("%s: start\n", __func__);
665         card->avs.avs_audio_ch = PS3AV_CMD_AUDIO_NUM_OF_CH_2;
666         card->avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
667         card->avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
668         card->avs.avs_audio_format = PS3AV_CMD_AUDIO_FORMAT_PCM;
669         card->avs.avs_audio_source = PS3AV_CMD_AUDIO_SOURCE_SERIAL;
670
671         ret = snd_ps3_change_avsetting(card);
672
673         snd_ps3_audio_fixup(card);
674
675         /* to start to generate SPDIF signal, fill data */
676         snd_ps3_program_dma(card, SND_PS3_DMA_FILLTYPE_SILENT_FIRSTFILL);
677         snd_ps3_kick_dma(card);
678         pr_debug("%s: end\n", __func__);
679         return ret;
680 }
681
682 /*
683  *  set sampling rate according to the substream
684  */
685 static int snd_ps3_set_avsetting(struct snd_pcm_substream *substream)
686 {
687         struct snd_ps3_card_info *card = snd_pcm_substream_chip(substream);
688         struct snd_ps3_avsetting_info avs;
689
690         avs = card->avs;
691
692         pr_debug("%s: called freq=%d width=%d\n", __func__,
693                  substream->runtime->rate,
694                  snd_pcm_format_width(substream->runtime->format));
695
696         pr_debug("%s: before freq=%d width=%d\n", __func__,
697                  card->avs.avs_audio_rate, card->avs.avs_audio_width);
698
699         /* sample rate */
700         switch (substream->runtime->rate) {
701         case 44100:
702                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_44K;
703                 break;
704         case 48000:
705                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_48K;
706                 break;
707         case 88200:
708                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_88K;
709                 break;
710         case 96000:
711                 avs.avs_audio_rate = PS3AV_CMD_AUDIO_FS_96K;
712                 break;
713         default:
714                 pr_info("%s: invalid rate %d\n", __func__,
715                         substream->runtime->rate);
716                 return 1;
717         }
718
719         /* width */
720         switch (snd_pcm_format_width(substream->runtime->format)) {
721         case 16:
722                 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_16;
723                 break;
724         case 24:
725                 avs.avs_audio_width = PS3AV_CMD_AUDIO_WORD_BITS_24;
726                 break;
727         default:
728                 pr_info("%s: invalid width %d\n", __func__,
729                         snd_pcm_format_width(substream->runtime->format));
730                 return 1;
731         }
732
733         if ((card->avs.avs_audio_width != avs.avs_audio_width) ||
734             (card->avs.avs_audio_rate != avs.avs_audio_rate)) {
735                 card->avs = avs;
736                 snd_ps3_change_avsetting(card);
737
738                 pr_debug("%s: after freq=%d width=%d\n", __func__,
739                          card->avs.avs_audio_rate, card->avs.avs_audio_width);
740
741                 return 0;
742         } else
743                 return 1;
744 }
745
746
747
748 static int snd_ps3_map_mmio(void)
749 {
750         the_card.mapped_mmio_vaddr =
751                 ioremap(the_card.ps3_dev->m_region->bus_addr,
752                         the_card.ps3_dev->m_region->len);
753
754         if (!the_card.mapped_mmio_vaddr) {
755                 pr_info("%s: ioremap 0 failed p=%#lx l=%#lx \n",
756                        __func__, the_card.ps3_dev->m_region->lpar_addr,
757                        the_card.ps3_dev->m_region->len);
758                 return -ENXIO;
759         }
760
761         return 0;
762 };
763
764 static void snd_ps3_unmap_mmio(void)
765 {
766         iounmap(the_card.mapped_mmio_vaddr);
767         the_card.mapped_mmio_vaddr = NULL;
768 }
769
770 static int snd_ps3_allocate_irq(void)
771 {
772         int ret;
773         u64 lpar_addr, lpar_size;
774         u64 __iomem *mapped;
775
776         /* FIXME: move this to device_init (H/W probe) */
777
778         /* get irq outlet */
779         ret = lv1_gpu_device_map(1, &lpar_addr, &lpar_size);
780         if (ret) {
781                 pr_info("%s: device map 1 failed %d\n", __func__,
782                         ret);
783                 return -ENXIO;
784         }
785
786         mapped = ioremap(lpar_addr, lpar_size);
787         if (!mapped) {
788                 pr_info("%s: ioremap 1 failed \n", __func__);
789                 return -ENXIO;
790         }
791
792         the_card.audio_irq_outlet = in_be64(mapped);
793
794         iounmap(mapped);
795         ret = lv1_gpu_device_unmap(1);
796         if (ret)
797                 pr_info("%s: unmap 1 failed\n", __func__);
798
799         /* irq */
800         ret = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY,
801                                  the_card.audio_irq_outlet,
802                                  &the_card.irq_no);
803         if (ret) {
804                 pr_info("%s:ps3_alloc_irq failed (%d)\n", __func__, ret);
805                 return ret;
806         }
807
808         ret = request_irq(the_card.irq_no, snd_ps3_interrupt, IRQF_DISABLED,
809                           SND_PS3_DRIVER_NAME, &the_card);
810         if (ret) {
811                 pr_info("%s: request_irq failed (%d)\n", __func__, ret);
812                 goto cleanup_irq;
813         }
814
815         return 0;
816
817  cleanup_irq:
818         ps3_irq_plug_destroy(the_card.irq_no);
819         return ret;
820 };
821
822 static void snd_ps3_free_irq(void)
823 {
824         free_irq(the_card.irq_no, &the_card);
825         ps3_irq_plug_destroy(the_card.irq_no);
826 }
827
828 static void snd_ps3_audio_set_base_addr(uint64_t ioaddr_start)
829 {
830         uint64_t val;
831         int ret;
832
833         val = (ioaddr_start & (0x0fUL << 32)) >> (32 - 20) |
834                 (0x03UL << 24) |
835                 (0x0fUL << 12) |
836                 (PS3_AUDIO_IOID);
837
838         ret = lv1_gpu_attribute(0x100, 0x007, val, 0, 0);
839         if (ret)
840                 pr_info("%s: gpu_attribute failed %d\n", __func__,
841                         ret);
842 }
843
844 static int __init snd_ps3_driver_probe(struct ps3_system_bus_device *dev)
845 {
846         int ret;
847         u64 lpar_addr, lpar_size;
848
849         BUG_ON(!firmware_has_feature(FW_FEATURE_PS3_LV1));
850         BUG_ON(dev->match_id != PS3_MATCH_ID_SOUND);
851
852         the_card.ps3_dev = dev;
853
854         ret = ps3_open_hv_device(dev);
855
856         if (ret)
857                 return -ENXIO;
858
859         /* setup MMIO */
860         ret = lv1_gpu_device_map(2, &lpar_addr, &lpar_size);
861         if (ret) {
862                 pr_info("%s: device map 2 failed %d\n", __func__, ret);
863                 goto clean_open;
864         }
865         ps3_mmio_region_init(dev, dev->m_region, lpar_addr, lpar_size,
866                 PAGE_SHIFT);
867
868         ret = snd_ps3_map_mmio();
869         if (ret)
870                 goto clean_dev_map;
871
872         /* setup DMA area */
873         ps3_dma_region_init(dev, dev->d_region,
874                             PAGE_SHIFT, /* use system page size */
875                             0, /* dma type; not used */
876                             NULL,
877                             _ALIGN_UP(SND_PS3_DMA_REGION_SIZE, PAGE_SIZE));
878         dev->d_region->ioid = PS3_AUDIO_IOID;
879
880         ret = ps3_dma_region_create(dev->d_region);
881         if (ret) {
882                 pr_info("%s: region_create\n", __func__);
883                 goto clean_mmio;
884         }
885
886         snd_ps3_audio_set_base_addr(dev->d_region->bus_addr);
887
888         /* CONFIG_SND_PS3_DEFAULT_START_DELAY */
889         the_card.start_delay = snd_ps3_start_delay;
890
891         /* irq */
892         if (snd_ps3_allocate_irq()) {
893                 ret = -ENXIO;
894                 goto clean_dma_region;
895         }
896
897         /* create card instance */
898         the_card.card = snd_card_new(index, id, THIS_MODULE, 0);
899         if (!the_card.card) {
900                 ret = -ENXIO;
901                 goto clean_irq;
902         }
903
904         strcpy(the_card.card->driver, "PS3");
905         strcpy(the_card.card->shortname, "PS3");
906         strcpy(the_card.card->longname, "PS3 sound");
907         /* create PCM devices instance */
908         /* NOTE:this driver works assuming pcm:substream = 1:1 */
909         ret = snd_pcm_new(the_card.card,
910                           "SPDIF",
911                           0, /* instance index, will be stored pcm.device*/
912                           1, /* output substream */
913                           0, /* input substream */
914                           &(the_card.pcm));
915         if (ret)
916                 goto clean_card;
917
918         the_card.pcm->private_data = &the_card;
919         strcpy(the_card.pcm->name, "SPDIF");
920
921         /* set pcm ops */
922         snd_pcm_set_ops(the_card.pcm, SNDRV_PCM_STREAM_PLAYBACK,
923                         &snd_ps3_pcm_spdif_ops);
924
925         the_card.pcm->info_flags = SNDRV_PCM_INFO_NONINTERLEAVED;
926         /* pre-alloc PCM DMA buffer*/
927         ret = snd_pcm_lib_preallocate_pages_for_all(the_card.pcm,
928                                         SNDRV_DMA_TYPE_DEV,
929                                         &dev->core,
930                                         SND_PS3_PCM_PREALLOC_SIZE,
931                                         SND_PS3_PCM_PREALLOC_SIZE);
932         if (ret < 0) {
933                 pr_info("%s: prealloc failed\n", __func__);
934                 goto clean_card;
935         }
936
937         /*
938          * allocate null buffer
939          * its size should be lager than PS3_AUDIO_FIFO_STAGE_SIZE * 2
940          * PAGE_SIZE is enogh
941          */
942         if (!(the_card.null_buffer_start_vaddr =
943               dma_alloc_coherent(&the_card.ps3_dev->core,
944                                  PAGE_SIZE,
945                                  &the_card.null_buffer_start_dma_addr,
946                                  GFP_KERNEL))) {
947                 pr_info("%s: nullbuffer alloc failed\n", __func__);
948                 goto clean_preallocate;
949         }
950         pr_debug("%s: null vaddr=%p dma=%#lx\n", __func__,
951                  the_card.null_buffer_start_vaddr,
952                  the_card.null_buffer_start_dma_addr);
953         /* set default sample rate/word width */
954         snd_ps3_init_avsetting(&the_card);
955
956         /* register the card */
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);