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c454fd4e MM |
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> | |
c454fd4e MM |
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> | |
c454fd4e MM |
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 | */ | |
3f76d984 | 140 | static const struct snd_pcm_hardware snd_ps3_pcm_hw = { |
c454fd4e MM |
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 */ | |
f78dfac9 | 956 | snd_card_set_dev(the_card.card, &dev->core); |
c454fd4e MM |
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); |