Root/
1 | /* |
2 | * Driver for SiS7019 Audio Accelerator |
3 | * |
4 | * Copyright (C) 2004-2007, David Dillow |
5 | * Written by David Dillow <dave@thedillows.org> |
6 | * Inspired by the Trident 4D-WaveDX/NX driver. |
7 | * |
8 | * All rights reserved. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by |
12 | * the Free Software Foundation, version 2. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
22 | */ |
23 | |
24 | #include <linux/init.h> |
25 | #include <linux/pci.h> |
26 | #include <linux/time.h> |
27 | #include <linux/slab.h> |
28 | #include <linux/moduleparam.h> |
29 | #include <linux/interrupt.h> |
30 | #include <linux/delay.h> |
31 | #include <sound/core.h> |
32 | #include <sound/ac97_codec.h> |
33 | #include <sound/initval.h> |
34 | #include "sis7019.h" |
35 | |
36 | MODULE_AUTHOR("David Dillow <dave@thedillows.org>"); |
37 | MODULE_DESCRIPTION("SiS7019"); |
38 | MODULE_LICENSE("GPL"); |
39 | MODULE_SUPPORTED_DEVICE("{{SiS,SiS7019 Audio Accelerator}}"); |
40 | |
41 | static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ |
42 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ |
43 | static int enable = 1; |
44 | |
45 | module_param(index, int, 0444); |
46 | MODULE_PARM_DESC(index, "Index value for SiS7019 Audio Accelerator."); |
47 | module_param(id, charp, 0444); |
48 | MODULE_PARM_DESC(id, "ID string for SiS7019 Audio Accelerator."); |
49 | module_param(enable, bool, 0444); |
50 | MODULE_PARM_DESC(enable, "Enable SiS7019 Audio Accelerator."); |
51 | |
52 | static DEFINE_PCI_DEVICE_TABLE(snd_sis7019_ids) = { |
53 | { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x7019) }, |
54 | { 0, } |
55 | }; |
56 | |
57 | MODULE_DEVICE_TABLE(pci, snd_sis7019_ids); |
58 | |
59 | /* There are three timing modes for the voices. |
60 | * |
61 | * For both playback and capture, when the buffer is one or two periods long, |
62 | * we use the hardware's built-in Mid-Loop Interrupt and End-Loop Interrupt |
63 | * to let us know when the periods have ended. |
64 | * |
65 | * When performing playback with more than two periods per buffer, we set |
66 | * the "Stop Sample Offset" and tell the hardware to interrupt us when we |
67 | * reach it. We then update the offset and continue on until we are |
68 | * interrupted for the next period. |
69 | * |
70 | * Capture channels do not have a SSO, so we allocate a playback channel to |
71 | * use as a timer for the capture periods. We use the SSO on the playback |
72 | * channel to clock out virtual periods, and adjust the virtual period length |
73 | * to maintain synchronization. This algorithm came from the Trident driver. |
74 | * |
75 | * FIXME: It'd be nice to make use of some of the synth features in the |
76 | * hardware, but a woeful lack of documentation is a significant roadblock. |
77 | */ |
78 | struct voice { |
79 | u16 flags; |
80 | #define VOICE_IN_USE 1 |
81 | #define VOICE_CAPTURE 2 |
82 | #define VOICE_SSO_TIMING 4 |
83 | #define VOICE_SYNC_TIMING 8 |
84 | u16 sync_cso; |
85 | u16 period_size; |
86 | u16 buffer_size; |
87 | u16 sync_period_size; |
88 | u16 sync_buffer_size; |
89 | u32 sso; |
90 | u32 vperiod; |
91 | struct snd_pcm_substream *substream; |
92 | struct voice *timing; |
93 | void __iomem *ctrl_base; |
94 | void __iomem *wave_base; |
95 | void __iomem *sync_base; |
96 | int num; |
97 | }; |
98 | |
99 | /* We need four pages to store our wave parameters during a suspend. If |
100 | * we're not doing power management, we still need to allocate a page |
101 | * for the silence buffer. |
102 | */ |
103 | #ifdef CONFIG_PM |
104 | #define SIS_SUSPEND_PAGES 4 |
105 | #else |
106 | #define SIS_SUSPEND_PAGES 1 |
107 | #endif |
108 | |
109 | struct sis7019 { |
110 | unsigned long ioport; |
111 | void __iomem *ioaddr; |
112 | int irq; |
113 | int codecs_present; |
114 | |
115 | struct pci_dev *pci; |
116 | struct snd_pcm *pcm; |
117 | struct snd_card *card; |
118 | struct snd_ac97 *ac97[3]; |
119 | |
120 | /* Protect against more than one thread hitting the AC97 |
121 | * registers (in a more polite manner than pounding the hardware |
122 | * semaphore) |
123 | */ |
124 | struct mutex ac97_mutex; |
125 | |
126 | /* voice_lock protects allocation/freeing of the voice descriptions |
127 | */ |
128 | spinlock_t voice_lock; |
129 | |
130 | struct voice voices[64]; |
131 | struct voice capture_voice; |
132 | |
133 | /* Allocate pages to store the internal wave state during |
134 | * suspends. When we're operating, this can be used as a silence |
135 | * buffer for a timing channel. |
136 | */ |
137 | void *suspend_state[SIS_SUSPEND_PAGES]; |
138 | |
139 | int silence_users; |
140 | dma_addr_t silence_dma_addr; |
141 | }; |
142 | |
143 | #define SIS_PRIMARY_CODEC_PRESENT 0x0001 |
144 | #define SIS_SECONDARY_CODEC_PRESENT 0x0002 |
145 | #define SIS_TERTIARY_CODEC_PRESENT 0x0004 |
146 | |
147 | /* The HW offset parameters (Loop End, Stop Sample, End Sample) have a |
148 | * documented range of 8-0xfff8 samples. Given that they are 0-based, |
149 | * that places our period/buffer range at 9-0xfff9 samples. That makes the |
150 | * max buffer size 0xfff9 samples * 2 channels * 2 bytes per sample, and |
151 | * max samples / min samples gives us the max periods in a buffer. |
152 | * |
153 | * We'll add a constraint upon open that limits the period and buffer sample |
154 | * size to values that are legal for the hardware. |
155 | */ |
156 | static struct snd_pcm_hardware sis_playback_hw_info = { |
157 | .info = (SNDRV_PCM_INFO_MMAP | |
158 | SNDRV_PCM_INFO_MMAP_VALID | |
159 | SNDRV_PCM_INFO_INTERLEAVED | |
160 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
161 | SNDRV_PCM_INFO_SYNC_START | |
162 | SNDRV_PCM_INFO_RESUME), |
163 | .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | |
164 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), |
165 | .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, |
166 | .rate_min = 4000, |
167 | .rate_max = 48000, |
168 | .channels_min = 1, |
169 | .channels_max = 2, |
170 | .buffer_bytes_max = (0xfff9 * 4), |
171 | .period_bytes_min = 9, |
172 | .period_bytes_max = (0xfff9 * 4), |
173 | .periods_min = 1, |
174 | .periods_max = (0xfff9 / 9), |
175 | }; |
176 | |
177 | static struct snd_pcm_hardware sis_capture_hw_info = { |
178 | .info = (SNDRV_PCM_INFO_MMAP | |
179 | SNDRV_PCM_INFO_MMAP_VALID | |
180 | SNDRV_PCM_INFO_INTERLEAVED | |
181 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
182 | SNDRV_PCM_INFO_SYNC_START | |
183 | SNDRV_PCM_INFO_RESUME), |
184 | .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | |
185 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), |
186 | .rates = SNDRV_PCM_RATE_48000, |
187 | .rate_min = 4000, |
188 | .rate_max = 48000, |
189 | .channels_min = 1, |
190 | .channels_max = 2, |
191 | .buffer_bytes_max = (0xfff9 * 4), |
192 | .period_bytes_min = 9, |
193 | .period_bytes_max = (0xfff9 * 4), |
194 | .periods_min = 1, |
195 | .periods_max = (0xfff9 / 9), |
196 | }; |
197 | |
198 | static void sis_update_sso(struct voice *voice, u16 period) |
199 | { |
200 | void __iomem *base = voice->ctrl_base; |
201 | |
202 | voice->sso += period; |
203 | if (voice->sso >= voice->buffer_size) |
204 | voice->sso -= voice->buffer_size; |
205 | |
206 | /* Enforce the documented hardware minimum offset */ |
207 | if (voice->sso < 8) |
208 | voice->sso = 8; |
209 | |
210 | /* The SSO is in the upper 16 bits of the register. */ |
211 | writew(voice->sso & 0xffff, base + SIS_PLAY_DMA_SSO_ESO + 2); |
212 | } |
213 | |
214 | static void sis_update_voice(struct voice *voice) |
215 | { |
216 | if (voice->flags & VOICE_SSO_TIMING) { |
217 | sis_update_sso(voice, voice->period_size); |
218 | } else if (voice->flags & VOICE_SYNC_TIMING) { |
219 | int sync; |
220 | |
221 | /* If we've not hit the end of the virtual period, update |
222 | * our records and keep going. |
223 | */ |
224 | if (voice->vperiod > voice->period_size) { |
225 | voice->vperiod -= voice->period_size; |
226 | if (voice->vperiod < voice->period_size) |
227 | sis_update_sso(voice, voice->vperiod); |
228 | else |
229 | sis_update_sso(voice, voice->period_size); |
230 | return; |
231 | } |
232 | |
233 | /* Calculate our relative offset between the target and |
234 | * the actual CSO value. Since we're operating in a loop, |
235 | * if the value is more than half way around, we can |
236 | * consider ourselves wrapped. |
237 | */ |
238 | sync = voice->sync_cso; |
239 | sync -= readw(voice->sync_base + SIS_CAPTURE_DMA_FORMAT_CSO); |
240 | if (sync > (voice->sync_buffer_size / 2)) |
241 | sync -= voice->sync_buffer_size; |
242 | |
243 | /* If sync is positive, then we interrupted too early, and |
244 | * we'll need to come back in a few samples and try again. |
245 | * There's a minimum wait, as it takes some time for the DMA |
246 | * engine to startup, etc... |
247 | */ |
248 | if (sync > 0) { |
249 | if (sync < 16) |
250 | sync = 16; |
251 | sis_update_sso(voice, sync); |
252 | return; |
253 | } |
254 | |
255 | /* Ok, we interrupted right on time, or (hopefully) just |
256 | * a bit late. We'll adjst our next waiting period based |
257 | * on how close we got. |
258 | * |
259 | * We need to stay just behind the actual channel to ensure |
260 | * it really is past a period when we get our interrupt -- |
261 | * otherwise we'll fall into the early code above and have |
262 | * a minimum wait time, which makes us quite late here, |
263 | * eating into the user's time to refresh the buffer, esp. |
264 | * if using small periods. |
265 | * |
266 | * If we're less than 9 samples behind, we're on target. |
267 | * Otherwise, shorten the next vperiod by the amount we've |
268 | * been delayed. |
269 | */ |
270 | if (sync > -9) |
271 | voice->vperiod = voice->sync_period_size + 1; |
272 | else |
273 | voice->vperiod = voice->sync_period_size + sync + 10; |
274 | |
275 | if (voice->vperiod < voice->buffer_size) { |
276 | sis_update_sso(voice, voice->vperiod); |
277 | voice->vperiod = 0; |
278 | } else |
279 | sis_update_sso(voice, voice->period_size); |
280 | |
281 | sync = voice->sync_cso + voice->sync_period_size; |
282 | if (sync >= voice->sync_buffer_size) |
283 | sync -= voice->sync_buffer_size; |
284 | voice->sync_cso = sync; |
285 | } |
286 | |
287 | snd_pcm_period_elapsed(voice->substream); |
288 | } |
289 | |
290 | static void sis_voice_irq(u32 status, struct voice *voice) |
291 | { |
292 | int bit; |
293 | |
294 | while (status) { |
295 | bit = __ffs(status); |
296 | status >>= bit + 1; |
297 | voice += bit; |
298 | sis_update_voice(voice); |
299 | voice++; |
300 | } |
301 | } |
302 | |
303 | static irqreturn_t sis_interrupt(int irq, void *dev) |
304 | { |
305 | struct sis7019 *sis = dev; |
306 | unsigned long io = sis->ioport; |
307 | struct voice *voice; |
308 | u32 intr, status; |
309 | |
310 | /* We only use the DMA interrupts, and we don't enable any other |
311 | * source of interrupts. But, it is possible to see an interupt |
312 | * status that didn't actually interrupt us, so eliminate anything |
313 | * we're not expecting to avoid falsely claiming an IRQ, and an |
314 | * ensuing endless loop. |
315 | */ |
316 | intr = inl(io + SIS_GISR); |
317 | intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | |
318 | SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; |
319 | if (!intr) |
320 | return IRQ_NONE; |
321 | |
322 | do { |
323 | status = inl(io + SIS_PISR_A); |
324 | if (status) { |
325 | sis_voice_irq(status, sis->voices); |
326 | outl(status, io + SIS_PISR_A); |
327 | } |
328 | |
329 | status = inl(io + SIS_PISR_B); |
330 | if (status) { |
331 | sis_voice_irq(status, &sis->voices[32]); |
332 | outl(status, io + SIS_PISR_B); |
333 | } |
334 | |
335 | status = inl(io + SIS_RISR); |
336 | if (status) { |
337 | voice = &sis->capture_voice; |
338 | if (!voice->timing) |
339 | snd_pcm_period_elapsed(voice->substream); |
340 | |
341 | outl(status, io + SIS_RISR); |
342 | } |
343 | |
344 | outl(intr, io + SIS_GISR); |
345 | intr = inl(io + SIS_GISR); |
346 | intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | |
347 | SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; |
348 | } while (intr); |
349 | |
350 | return IRQ_HANDLED; |
351 | } |
352 | |
353 | static u32 sis_rate_to_delta(unsigned int rate) |
354 | { |
355 | u32 delta; |
356 | |
357 | /* This was copied from the trident driver, but it seems its gotten |
358 | * around a bit... nevertheless, it works well. |
359 | * |
360 | * We special case 44100 and 8000 since rounding with the equation |
361 | * does not give us an accurate enough value. For 11025 and 22050 |
362 | * the equation gives us the best answer. All other frequencies will |
363 | * also use the equation. JDW |
364 | */ |
365 | if (rate == 44100) |
366 | delta = 0xeb3; |
367 | else if (rate == 8000) |
368 | delta = 0x2ab; |
369 | else if (rate == 48000) |
370 | delta = 0x1000; |
371 | else |
372 | delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff; |
373 | return delta; |
374 | } |
375 | |
376 | static void __sis_map_silence(struct sis7019 *sis) |
377 | { |
378 | /* Helper function: must hold sis->voice_lock on entry */ |
379 | if (!sis->silence_users) |
380 | sis->silence_dma_addr = pci_map_single(sis->pci, |
381 | sis->suspend_state[0], |
382 | 4096, PCI_DMA_TODEVICE); |
383 | sis->silence_users++; |
384 | } |
385 | |
386 | static void __sis_unmap_silence(struct sis7019 *sis) |
387 | { |
388 | /* Helper function: must hold sis->voice_lock on entry */ |
389 | sis->silence_users--; |
390 | if (!sis->silence_users) |
391 | pci_unmap_single(sis->pci, sis->silence_dma_addr, 4096, |
392 | PCI_DMA_TODEVICE); |
393 | } |
394 | |
395 | static void sis_free_voice(struct sis7019 *sis, struct voice *voice) |
396 | { |
397 | unsigned long flags; |
398 | |
399 | spin_lock_irqsave(&sis->voice_lock, flags); |
400 | if (voice->timing) { |
401 | __sis_unmap_silence(sis); |
402 | voice->timing->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | |
403 | VOICE_SYNC_TIMING); |
404 | voice->timing = NULL; |
405 | } |
406 | voice->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | VOICE_SYNC_TIMING); |
407 | spin_unlock_irqrestore(&sis->voice_lock, flags); |
408 | } |
409 | |
410 | static struct voice *__sis_alloc_playback_voice(struct sis7019 *sis) |
411 | { |
412 | /* Must hold the voice_lock on entry */ |
413 | struct voice *voice; |
414 | int i; |
415 | |
416 | for (i = 0; i < 64; i++) { |
417 | voice = &sis->voices[i]; |
418 | if (voice->flags & VOICE_IN_USE) |
419 | continue; |
420 | voice->flags |= VOICE_IN_USE; |
421 | goto found_one; |
422 | } |
423 | voice = NULL; |
424 | |
425 | found_one: |
426 | return voice; |
427 | } |
428 | |
429 | static struct voice *sis_alloc_playback_voice(struct sis7019 *sis) |
430 | { |
431 | struct voice *voice; |
432 | unsigned long flags; |
433 | |
434 | spin_lock_irqsave(&sis->voice_lock, flags); |
435 | voice = __sis_alloc_playback_voice(sis); |
436 | spin_unlock_irqrestore(&sis->voice_lock, flags); |
437 | |
438 | return voice; |
439 | } |
440 | |
441 | static int sis_alloc_timing_voice(struct snd_pcm_substream *substream, |
442 | struct snd_pcm_hw_params *hw_params) |
443 | { |
444 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
445 | struct snd_pcm_runtime *runtime = substream->runtime; |
446 | struct voice *voice = runtime->private_data; |
447 | unsigned int period_size, buffer_size; |
448 | unsigned long flags; |
449 | int needed; |
450 | |
451 | /* If there are one or two periods per buffer, we don't need a |
452 | * timing voice, as we can use the capture channel's interrupts |
453 | * to clock out the periods. |
454 | */ |
455 | period_size = params_period_size(hw_params); |
456 | buffer_size = params_buffer_size(hw_params); |
457 | needed = (period_size != buffer_size && |
458 | period_size != (buffer_size / 2)); |
459 | |
460 | if (needed && !voice->timing) { |
461 | spin_lock_irqsave(&sis->voice_lock, flags); |
462 | voice->timing = __sis_alloc_playback_voice(sis); |
463 | if (voice->timing) |
464 | __sis_map_silence(sis); |
465 | spin_unlock_irqrestore(&sis->voice_lock, flags); |
466 | if (!voice->timing) |
467 | return -ENOMEM; |
468 | voice->timing->substream = substream; |
469 | } else if (!needed && voice->timing) { |
470 | sis_free_voice(sis, voice); |
471 | voice->timing = NULL; |
472 | } |
473 | |
474 | return 0; |
475 | } |
476 | |
477 | static int sis_playback_open(struct snd_pcm_substream *substream) |
478 | { |
479 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
480 | struct snd_pcm_runtime *runtime = substream->runtime; |
481 | struct voice *voice; |
482 | |
483 | voice = sis_alloc_playback_voice(sis); |
484 | if (!voice) |
485 | return -EAGAIN; |
486 | |
487 | voice->substream = substream; |
488 | runtime->private_data = voice; |
489 | runtime->hw = sis_playback_hw_info; |
490 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
491 | 9, 0xfff9); |
492 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
493 | 9, 0xfff9); |
494 | snd_pcm_set_sync(substream); |
495 | return 0; |
496 | } |
497 | |
498 | static int sis_substream_close(struct snd_pcm_substream *substream) |
499 | { |
500 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
501 | struct snd_pcm_runtime *runtime = substream->runtime; |
502 | struct voice *voice = runtime->private_data; |
503 | |
504 | sis_free_voice(sis, voice); |
505 | return 0; |
506 | } |
507 | |
508 | static int sis_playback_hw_params(struct snd_pcm_substream *substream, |
509 | struct snd_pcm_hw_params *hw_params) |
510 | { |
511 | return snd_pcm_lib_malloc_pages(substream, |
512 | params_buffer_bytes(hw_params)); |
513 | } |
514 | |
515 | static int sis_hw_free(struct snd_pcm_substream *substream) |
516 | { |
517 | return snd_pcm_lib_free_pages(substream); |
518 | } |
519 | |
520 | static int sis_pcm_playback_prepare(struct snd_pcm_substream *substream) |
521 | { |
522 | struct snd_pcm_runtime *runtime = substream->runtime; |
523 | struct voice *voice = runtime->private_data; |
524 | void __iomem *ctrl_base = voice->ctrl_base; |
525 | void __iomem *wave_base = voice->wave_base; |
526 | u32 format, dma_addr, control, sso_eso, delta, reg; |
527 | u16 leo; |
528 | |
529 | /* We rely on the PCM core to ensure that the parameters for this |
530 | * substream do not change on us while we're programming the HW. |
531 | */ |
532 | format = 0; |
533 | if (snd_pcm_format_width(runtime->format) == 8) |
534 | format |= SIS_PLAY_DMA_FORMAT_8BIT; |
535 | if (!snd_pcm_format_signed(runtime->format)) |
536 | format |= SIS_PLAY_DMA_FORMAT_UNSIGNED; |
537 | if (runtime->channels == 1) |
538 | format |= SIS_PLAY_DMA_FORMAT_MONO; |
539 | |
540 | /* The baseline setup is for a single period per buffer, and |
541 | * we add bells and whistles as needed from there. |
542 | */ |
543 | dma_addr = runtime->dma_addr; |
544 | leo = runtime->buffer_size - 1; |
545 | control = leo | SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_LEO; |
546 | sso_eso = leo; |
547 | |
548 | if (runtime->period_size == (runtime->buffer_size / 2)) { |
549 | control |= SIS_PLAY_DMA_INTR_AT_MLP; |
550 | } else if (runtime->period_size != runtime->buffer_size) { |
551 | voice->flags |= VOICE_SSO_TIMING; |
552 | voice->sso = runtime->period_size - 1; |
553 | voice->period_size = runtime->period_size; |
554 | voice->buffer_size = runtime->buffer_size; |
555 | |
556 | control &= ~SIS_PLAY_DMA_INTR_AT_LEO; |
557 | control |= SIS_PLAY_DMA_INTR_AT_SSO; |
558 | sso_eso |= (runtime->period_size - 1) << 16; |
559 | } |
560 | |
561 | delta = sis_rate_to_delta(runtime->rate); |
562 | |
563 | /* Ok, we're ready to go, set up the channel. |
564 | */ |
565 | writel(format, ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); |
566 | writel(dma_addr, ctrl_base + SIS_PLAY_DMA_BASE); |
567 | writel(control, ctrl_base + SIS_PLAY_DMA_CONTROL); |
568 | writel(sso_eso, ctrl_base + SIS_PLAY_DMA_SSO_ESO); |
569 | |
570 | for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) |
571 | writel(0, wave_base + reg); |
572 | |
573 | writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL); |
574 | writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION); |
575 | writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | |
576 | SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | |
577 | SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, |
578 | wave_base + SIS_WAVE_CHANNEL_CONTROL); |
579 | |
580 | /* Force PCI writes to post. */ |
581 | readl(ctrl_base); |
582 | |
583 | return 0; |
584 | } |
585 | |
586 | static int sis_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
587 | { |
588 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
589 | unsigned long io = sis->ioport; |
590 | struct snd_pcm_substream *s; |
591 | struct voice *voice; |
592 | void *chip; |
593 | int starting; |
594 | u32 record = 0; |
595 | u32 play[2] = { 0, 0 }; |
596 | |
597 | /* No locks needed, as the PCM core will hold the locks on the |
598 | * substreams, and the HW will only start/stop the indicated voices |
599 | * without changing the state of the others. |
600 | */ |
601 | switch (cmd) { |
602 | case SNDRV_PCM_TRIGGER_START: |
603 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
604 | case SNDRV_PCM_TRIGGER_RESUME: |
605 | starting = 1; |
606 | break; |
607 | case SNDRV_PCM_TRIGGER_STOP: |
608 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
609 | case SNDRV_PCM_TRIGGER_SUSPEND: |
610 | starting = 0; |
611 | break; |
612 | default: |
613 | return -EINVAL; |
614 | } |
615 | |
616 | snd_pcm_group_for_each_entry(s, substream) { |
617 | /* Make sure it is for us... */ |
618 | chip = snd_pcm_substream_chip(s); |
619 | if (chip != sis) |
620 | continue; |
621 | |
622 | voice = s->runtime->private_data; |
623 | if (voice->flags & VOICE_CAPTURE) { |
624 | record |= 1 << voice->num; |
625 | voice = voice->timing; |
626 | } |
627 | |
628 | /* voice could be NULL if this a recording stream, and it |
629 | * doesn't have an external timing channel. |
630 | */ |
631 | if (voice) |
632 | play[voice->num / 32] |= 1 << (voice->num & 0x1f); |
633 | |
634 | snd_pcm_trigger_done(s, substream); |
635 | } |
636 | |
637 | if (starting) { |
638 | if (record) |
639 | outl(record, io + SIS_RECORD_START_REG); |
640 | if (play[0]) |
641 | outl(play[0], io + SIS_PLAY_START_A_REG); |
642 | if (play[1]) |
643 | outl(play[1], io + SIS_PLAY_START_B_REG); |
644 | } else { |
645 | if (record) |
646 | outl(record, io + SIS_RECORD_STOP_REG); |
647 | if (play[0]) |
648 | outl(play[0], io + SIS_PLAY_STOP_A_REG); |
649 | if (play[1]) |
650 | outl(play[1], io + SIS_PLAY_STOP_B_REG); |
651 | } |
652 | return 0; |
653 | } |
654 | |
655 | static snd_pcm_uframes_t sis_pcm_pointer(struct snd_pcm_substream *substream) |
656 | { |
657 | struct snd_pcm_runtime *runtime = substream->runtime; |
658 | struct voice *voice = runtime->private_data; |
659 | u32 cso; |
660 | |
661 | cso = readl(voice->ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); |
662 | cso &= 0xffff; |
663 | return cso; |
664 | } |
665 | |
666 | static int sis_capture_open(struct snd_pcm_substream *substream) |
667 | { |
668 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
669 | struct snd_pcm_runtime *runtime = substream->runtime; |
670 | struct voice *voice = &sis->capture_voice; |
671 | unsigned long flags; |
672 | |
673 | /* FIXME: The driver only supports recording from one channel |
674 | * at the moment, but it could support more. |
675 | */ |
676 | spin_lock_irqsave(&sis->voice_lock, flags); |
677 | if (voice->flags & VOICE_IN_USE) |
678 | voice = NULL; |
679 | else |
680 | voice->flags |= VOICE_IN_USE; |
681 | spin_unlock_irqrestore(&sis->voice_lock, flags); |
682 | |
683 | if (!voice) |
684 | return -EAGAIN; |
685 | |
686 | voice->substream = substream; |
687 | runtime->private_data = voice; |
688 | runtime->hw = sis_capture_hw_info; |
689 | runtime->hw.rates = sis->ac97[0]->rates[AC97_RATES_ADC]; |
690 | snd_pcm_limit_hw_rates(runtime); |
691 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
692 | 9, 0xfff9); |
693 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
694 | 9, 0xfff9); |
695 | snd_pcm_set_sync(substream); |
696 | return 0; |
697 | } |
698 | |
699 | static int sis_capture_hw_params(struct snd_pcm_substream *substream, |
700 | struct snd_pcm_hw_params *hw_params) |
701 | { |
702 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
703 | int rc; |
704 | |
705 | rc = snd_ac97_set_rate(sis->ac97[0], AC97_PCM_LR_ADC_RATE, |
706 | params_rate(hw_params)); |
707 | if (rc) |
708 | goto out; |
709 | |
710 | rc = snd_pcm_lib_malloc_pages(substream, |
711 | params_buffer_bytes(hw_params)); |
712 | if (rc < 0) |
713 | goto out; |
714 | |
715 | rc = sis_alloc_timing_voice(substream, hw_params); |
716 | |
717 | out: |
718 | return rc; |
719 | } |
720 | |
721 | static void sis_prepare_timing_voice(struct voice *voice, |
722 | struct snd_pcm_substream *substream) |
723 | { |
724 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
725 | struct snd_pcm_runtime *runtime = substream->runtime; |
726 | struct voice *timing = voice->timing; |
727 | void __iomem *play_base = timing->ctrl_base; |
728 | void __iomem *wave_base = timing->wave_base; |
729 | u16 buffer_size, period_size; |
730 | u32 format, control, sso_eso, delta; |
731 | u32 vperiod, sso, reg; |
732 | |
733 | /* Set our initial buffer and period as large as we can given a |
734 | * single page of silence. |
735 | */ |
736 | buffer_size = 4096 / runtime->channels; |
737 | buffer_size /= snd_pcm_format_size(runtime->format, 1); |
738 | period_size = buffer_size; |
739 | |
740 | /* Initially, we want to interrupt just a bit behind the end of |
741 | * the period we're clocking out. 12 samples seems to give a good |
742 | * delay. |
743 | * |
744 | * We want to spread our interrupts throughout the virtual period, |
745 | * so that we don't end up with two interrupts back to back at the |
746 | * end -- this helps minimize the effects of any jitter. Adjust our |
747 | * clocking period size so that the last period is at least a fourth |
748 | * of a full period. |
749 | * |
750 | * This is all moot if we don't need to use virtual periods. |
751 | */ |
752 | vperiod = runtime->period_size + 12; |
753 | if (vperiod > period_size) { |
754 | u16 tail = vperiod % period_size; |
755 | u16 quarter_period = period_size / 4; |
756 | |
757 | if (tail && tail < quarter_period) { |
758 | u16 loops = vperiod / period_size; |
759 | |
760 | tail = quarter_period - tail; |
761 | tail += loops - 1; |
762 | tail /= loops; |
763 | period_size -= tail; |
764 | } |
765 | |
766 | sso = period_size - 1; |
767 | } else { |
768 | /* The initial period will fit inside the buffer, so we |
769 | * don't need to use virtual periods -- disable them. |
770 | */ |
771 | period_size = runtime->period_size; |
772 | sso = vperiod - 1; |
773 | vperiod = 0; |
774 | } |
775 | |
776 | /* The interrupt handler implements the timing syncronization, so |
777 | * setup its state. |
778 | */ |
779 | timing->flags |= VOICE_SYNC_TIMING; |
780 | timing->sync_base = voice->ctrl_base; |
781 | timing->sync_cso = runtime->period_size; |
782 | timing->sync_period_size = runtime->period_size; |
783 | timing->sync_buffer_size = runtime->buffer_size; |
784 | timing->period_size = period_size; |
785 | timing->buffer_size = buffer_size; |
786 | timing->sso = sso; |
787 | timing->vperiod = vperiod; |
788 | |
789 | /* Using unsigned samples with the all-zero silence buffer |
790 | * forces the output to the lower rail, killing playback. |
791 | * So ignore unsigned vs signed -- it doesn't change the timing. |
792 | */ |
793 | format = 0; |
794 | if (snd_pcm_format_width(runtime->format) == 8) |
795 | format = SIS_CAPTURE_DMA_FORMAT_8BIT; |
796 | if (runtime->channels == 1) |
797 | format |= SIS_CAPTURE_DMA_FORMAT_MONO; |
798 | |
799 | control = timing->buffer_size - 1; |
800 | control |= SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_SSO; |
801 | sso_eso = timing->buffer_size - 1; |
802 | sso_eso |= timing->sso << 16; |
803 | |
804 | delta = sis_rate_to_delta(runtime->rate); |
805 | |
806 | /* We've done the math, now configure the channel. |
807 | */ |
808 | writel(format, play_base + SIS_PLAY_DMA_FORMAT_CSO); |
809 | writel(sis->silence_dma_addr, play_base + SIS_PLAY_DMA_BASE); |
810 | writel(control, play_base + SIS_PLAY_DMA_CONTROL); |
811 | writel(sso_eso, play_base + SIS_PLAY_DMA_SSO_ESO); |
812 | |
813 | for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) |
814 | writel(0, wave_base + reg); |
815 | |
816 | writel(SIS_WAVE_GENERAL_WAVE_VOLUME, wave_base + SIS_WAVE_GENERAL); |
817 | writel(delta << 16, wave_base + SIS_WAVE_GENERAL_ARTICULATION); |
818 | writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | |
819 | SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | |
820 | SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, |
821 | wave_base + SIS_WAVE_CHANNEL_CONTROL); |
822 | } |
823 | |
824 | static int sis_pcm_capture_prepare(struct snd_pcm_substream *substream) |
825 | { |
826 | struct snd_pcm_runtime *runtime = substream->runtime; |
827 | struct voice *voice = runtime->private_data; |
828 | void __iomem *rec_base = voice->ctrl_base; |
829 | u32 format, dma_addr, control; |
830 | u16 leo; |
831 | |
832 | /* We rely on the PCM core to ensure that the parameters for this |
833 | * substream do not change on us while we're programming the HW. |
834 | */ |
835 | format = 0; |
836 | if (snd_pcm_format_width(runtime->format) == 8) |
837 | format = SIS_CAPTURE_DMA_FORMAT_8BIT; |
838 | if (!snd_pcm_format_signed(runtime->format)) |
839 | format |= SIS_CAPTURE_DMA_FORMAT_UNSIGNED; |
840 | if (runtime->channels == 1) |
841 | format |= SIS_CAPTURE_DMA_FORMAT_MONO; |
842 | |
843 | dma_addr = runtime->dma_addr; |
844 | leo = runtime->buffer_size - 1; |
845 | control = leo | SIS_CAPTURE_DMA_LOOP; |
846 | |
847 | /* If we've got more than two periods per buffer, then we have |
848 | * use a timing voice to clock out the periods. Otherwise, we can |
849 | * use the capture channel's interrupts. |
850 | */ |
851 | if (voice->timing) { |
852 | sis_prepare_timing_voice(voice, substream); |
853 | } else { |
854 | control |= SIS_CAPTURE_DMA_INTR_AT_LEO; |
855 | if (runtime->period_size != runtime->buffer_size) |
856 | control |= SIS_CAPTURE_DMA_INTR_AT_MLP; |
857 | } |
858 | |
859 | writel(format, rec_base + SIS_CAPTURE_DMA_FORMAT_CSO); |
860 | writel(dma_addr, rec_base + SIS_CAPTURE_DMA_BASE); |
861 | writel(control, rec_base + SIS_CAPTURE_DMA_CONTROL); |
862 | |
863 | /* Force the writes to post. */ |
864 | readl(rec_base); |
865 | |
866 | return 0; |
867 | } |
868 | |
869 | static struct snd_pcm_ops sis_playback_ops = { |
870 | .open = sis_playback_open, |
871 | .close = sis_substream_close, |
872 | .ioctl = snd_pcm_lib_ioctl, |
873 | .hw_params = sis_playback_hw_params, |
874 | .hw_free = sis_hw_free, |
875 | .prepare = sis_pcm_playback_prepare, |
876 | .trigger = sis_pcm_trigger, |
877 | .pointer = sis_pcm_pointer, |
878 | }; |
879 | |
880 | static struct snd_pcm_ops sis_capture_ops = { |
881 | .open = sis_capture_open, |
882 | .close = sis_substream_close, |
883 | .ioctl = snd_pcm_lib_ioctl, |
884 | .hw_params = sis_capture_hw_params, |
885 | .hw_free = sis_hw_free, |
886 | .prepare = sis_pcm_capture_prepare, |
887 | .trigger = sis_pcm_trigger, |
888 | .pointer = sis_pcm_pointer, |
889 | }; |
890 | |
891 | static int __devinit sis_pcm_create(struct sis7019 *sis) |
892 | { |
893 | struct snd_pcm *pcm; |
894 | int rc; |
895 | |
896 | /* We have 64 voices, and the driver currently records from |
897 | * only one channel, though that could change in the future. |
898 | */ |
899 | rc = snd_pcm_new(sis->card, "SiS7019", 0, 64, 1, &pcm); |
900 | if (rc) |
901 | return rc; |
902 | |
903 | pcm->private_data = sis; |
904 | strcpy(pcm->name, "SiS7019"); |
905 | sis->pcm = pcm; |
906 | |
907 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &sis_playback_ops); |
908 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &sis_capture_ops); |
909 | |
910 | /* Try to preallocate some memory, but it's not the end of the |
911 | * world if this fails. |
912 | */ |
913 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, |
914 | snd_dma_pci_data(sis->pci), 64*1024, 128*1024); |
915 | |
916 | return 0; |
917 | } |
918 | |
919 | static unsigned short sis_ac97_rw(struct sis7019 *sis, int codec, u32 cmd) |
920 | { |
921 | unsigned long io = sis->ioport; |
922 | unsigned short val = 0xffff; |
923 | u16 status; |
924 | u16 rdy; |
925 | int count; |
926 | static const u16 codec_ready[3] = { |
927 | SIS_AC97_STATUS_CODEC_READY, |
928 | SIS_AC97_STATUS_CODEC2_READY, |
929 | SIS_AC97_STATUS_CODEC3_READY, |
930 | }; |
931 | |
932 | rdy = codec_ready[codec]; |
933 | |
934 | |
935 | /* Get the AC97 semaphore -- software first, so we don't spin |
936 | * pounding out IO reads on the hardware semaphore... |
937 | */ |
938 | mutex_lock(&sis->ac97_mutex); |
939 | |
940 | count = 0xffff; |
941 | while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) |
942 | udelay(1); |
943 | |
944 | if (!count) |
945 | goto timeout; |
946 | |
947 | /* ... and wait for any outstanding commands to complete ... |
948 | */ |
949 | count = 0xffff; |
950 | do { |
951 | status = inw(io + SIS_AC97_STATUS); |
952 | if ((status & rdy) && !(status & SIS_AC97_STATUS_BUSY)) |
953 | break; |
954 | |
955 | udelay(1); |
956 | } while (--count); |
957 | |
958 | if (!count) |
959 | goto timeout_sema; |
960 | |
961 | /* ... before sending our command and waiting for it to finish ... |
962 | */ |
963 | outl(cmd, io + SIS_AC97_CMD); |
964 | udelay(10); |
965 | |
966 | count = 0xffff; |
967 | while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) |
968 | udelay(1); |
969 | |
970 | /* ... and reading the results (if any). |
971 | */ |
972 | val = inl(io + SIS_AC97_CMD) >> 16; |
973 | |
974 | timeout_sema: |
975 | outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA); |
976 | timeout: |
977 | mutex_unlock(&sis->ac97_mutex); |
978 | |
979 | if (!count) { |
980 | printk(KERN_ERR "sis7019: ac97 codec %d timeout cmd 0x%08x\n", |
981 | codec, cmd); |
982 | } |
983 | |
984 | return val; |
985 | } |
986 | |
987 | static void sis_ac97_write(struct snd_ac97 *ac97, unsigned short reg, |
988 | unsigned short val) |
989 | { |
990 | static const u32 cmd[3] = { |
991 | SIS_AC97_CMD_CODEC_WRITE, |
992 | SIS_AC97_CMD_CODEC2_WRITE, |
993 | SIS_AC97_CMD_CODEC3_WRITE, |
994 | }; |
995 | sis_ac97_rw(ac97->private_data, ac97->num, |
996 | (val << 16) | (reg << 8) | cmd[ac97->num]); |
997 | } |
998 | |
999 | static unsigned short sis_ac97_read(struct snd_ac97 *ac97, unsigned short reg) |
1000 | { |
1001 | static const u32 cmd[3] = { |
1002 | SIS_AC97_CMD_CODEC_READ, |
1003 | SIS_AC97_CMD_CODEC2_READ, |
1004 | SIS_AC97_CMD_CODEC3_READ, |
1005 | }; |
1006 | return sis_ac97_rw(ac97->private_data, ac97->num, |
1007 | (reg << 8) | cmd[ac97->num]); |
1008 | } |
1009 | |
1010 | static int __devinit sis_mixer_create(struct sis7019 *sis) |
1011 | { |
1012 | struct snd_ac97_bus *bus; |
1013 | struct snd_ac97_template ac97; |
1014 | static struct snd_ac97_bus_ops ops = { |
1015 | .write = sis_ac97_write, |
1016 | .read = sis_ac97_read, |
1017 | }; |
1018 | int rc; |
1019 | |
1020 | memset(&ac97, 0, sizeof(ac97)); |
1021 | ac97.private_data = sis; |
1022 | |
1023 | rc = snd_ac97_bus(sis->card, 0, &ops, NULL, &bus); |
1024 | if (!rc && sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
1025 | rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[0]); |
1026 | ac97.num = 1; |
1027 | if (!rc && (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT)) |
1028 | rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[1]); |
1029 | ac97.num = 2; |
1030 | if (!rc && (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT)) |
1031 | rc = snd_ac97_mixer(bus, &ac97, &sis->ac97[2]); |
1032 | |
1033 | /* If we return an error here, then snd_card_free() should |
1034 | * free up any ac97 codecs that got created, as well as the bus. |
1035 | */ |
1036 | return rc; |
1037 | } |
1038 | |
1039 | static void sis_free_suspend(struct sis7019 *sis) |
1040 | { |
1041 | int i; |
1042 | |
1043 | for (i = 0; i < SIS_SUSPEND_PAGES; i++) |
1044 | kfree(sis->suspend_state[i]); |
1045 | } |
1046 | |
1047 | static int sis_chip_free(struct sis7019 *sis) |
1048 | { |
1049 | /* Reset the chip, and disable all interrputs. |
1050 | */ |
1051 | outl(SIS_GCR_SOFTWARE_RESET, sis->ioport + SIS_GCR); |
1052 | udelay(25); |
1053 | outl(0, sis->ioport + SIS_GCR); |
1054 | outl(0, sis->ioport + SIS_GIER); |
1055 | |
1056 | /* Now, free everything we allocated. |
1057 | */ |
1058 | if (sis->irq >= 0) |
1059 | free_irq(sis->irq, sis); |
1060 | |
1061 | if (sis->ioaddr) |
1062 | iounmap(sis->ioaddr); |
1063 | |
1064 | pci_release_regions(sis->pci); |
1065 | pci_disable_device(sis->pci); |
1066 | |
1067 | sis_free_suspend(sis); |
1068 | return 0; |
1069 | } |
1070 | |
1071 | static int sis_dev_free(struct snd_device *dev) |
1072 | { |
1073 | struct sis7019 *sis = dev->device_data; |
1074 | return sis_chip_free(sis); |
1075 | } |
1076 | |
1077 | static int sis_chip_init(struct sis7019 *sis) |
1078 | { |
1079 | unsigned long io = sis->ioport; |
1080 | void __iomem *ioaddr = sis->ioaddr; |
1081 | u16 status; |
1082 | int count; |
1083 | int i; |
1084 | |
1085 | /* Reset the audio controller |
1086 | */ |
1087 | outl(SIS_GCR_SOFTWARE_RESET, io + SIS_GCR); |
1088 | udelay(25); |
1089 | outl(0, io + SIS_GCR); |
1090 | |
1091 | /* Get the AC-link semaphore, and reset the codecs |
1092 | */ |
1093 | count = 0xffff; |
1094 | while ((inw(io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) |
1095 | udelay(1); |
1096 | |
1097 | if (!count) |
1098 | return -EIO; |
1099 | |
1100 | outl(SIS_AC97_CMD_CODEC_COLD_RESET, io + SIS_AC97_CMD); |
1101 | udelay(250); |
1102 | |
1103 | count = 0xffff; |
1104 | while ((inw(io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) |
1105 | udelay(1); |
1106 | |
1107 | /* Now that we've finished the reset, find out what's attached. |
1108 | */ |
1109 | status = inl(io + SIS_AC97_STATUS); |
1110 | if (status & SIS_AC97_STATUS_CODEC_READY) |
1111 | sis->codecs_present |= SIS_PRIMARY_CODEC_PRESENT; |
1112 | if (status & SIS_AC97_STATUS_CODEC2_READY) |
1113 | sis->codecs_present |= SIS_SECONDARY_CODEC_PRESENT; |
1114 | if (status & SIS_AC97_STATUS_CODEC3_READY) |
1115 | sis->codecs_present |= SIS_TERTIARY_CODEC_PRESENT; |
1116 | |
1117 | /* All done, let go of the semaphore, and check for errors |
1118 | */ |
1119 | outl(SIS_AC97_SEMA_RELEASE, io + SIS_AC97_SEMA); |
1120 | if (!sis->codecs_present || !count) |
1121 | return -EIO; |
1122 | |
1123 | /* Let the hardware know that the audio driver is alive, |
1124 | * and enable PCM slots on the AC-link for L/R playback (3 & 4) and |
1125 | * record channels. We're going to want to use Variable Rate Audio |
1126 | * for recording, to avoid needlessly resampling from 48kHZ. |
1127 | */ |
1128 | outl(SIS_AC97_CONF_AUDIO_ALIVE, io + SIS_AC97_CONF); |
1129 | outl(SIS_AC97_CONF_AUDIO_ALIVE | SIS_AC97_CONF_PCM_LR_ENABLE | |
1130 | SIS_AC97_CONF_PCM_CAP_MIC_ENABLE | |
1131 | SIS_AC97_CONF_PCM_CAP_LR_ENABLE | |
1132 | SIS_AC97_CONF_CODEC_VRA_ENABLE, io + SIS_AC97_CONF); |
1133 | |
1134 | /* All AC97 PCM slots should be sourced from sub-mixer 0. |
1135 | */ |
1136 | outl(0, io + SIS_AC97_PSR); |
1137 | |
1138 | /* There is only one valid DMA setup for a PCI environment. |
1139 | */ |
1140 | outl(SIS_DMA_CSR_PCI_SETTINGS, io + SIS_DMA_CSR); |
1141 | |
1142 | /* Reset the syncronization groups for all of the channels |
1143 | * to be asyncronous. If we start doing SPDIF or 5.1 sound, etc. |
1144 | * we'll need to change how we handle these. Until then, we just |
1145 | * assign sub-mixer 0 to all playback channels, and avoid any |
1146 | * attenuation on the audio. |
1147 | */ |
1148 | outl(0, io + SIS_PLAY_SYNC_GROUP_A); |
1149 | outl(0, io + SIS_PLAY_SYNC_GROUP_B); |
1150 | outl(0, io + SIS_PLAY_SYNC_GROUP_C); |
1151 | outl(0, io + SIS_PLAY_SYNC_GROUP_D); |
1152 | outl(0, io + SIS_MIXER_SYNC_GROUP); |
1153 | |
1154 | for (i = 0; i < 64; i++) { |
1155 | writel(i, SIS_MIXER_START_ADDR(ioaddr, i)); |
1156 | writel(SIS_MIXER_RIGHT_NO_ATTEN | SIS_MIXER_LEFT_NO_ATTEN | |
1157 | SIS_MIXER_DEST_0, SIS_MIXER_ADDR(ioaddr, i)); |
1158 | } |
1159 | |
1160 | /* Don't attenuate any audio set for the wave amplifier. |
1161 | * |
1162 | * FIXME: Maximum attenuation is set for the music amp, which will |
1163 | * need to change if we start using the synth engine. |
1164 | */ |
1165 | outl(0xffff0000, io + SIS_WEVCR); |
1166 | |
1167 | /* Ensure that the wave engine is in normal operating mode. |
1168 | */ |
1169 | outl(0, io + SIS_WECCR); |
1170 | |
1171 | /* Go ahead and enable the DMA interrupts. They won't go live |
1172 | * until we start a channel. |
1173 | */ |
1174 | outl(SIS_GIER_AUDIO_PLAY_DMA_IRQ_ENABLE | |
1175 | SIS_GIER_AUDIO_RECORD_DMA_IRQ_ENABLE, io + SIS_GIER); |
1176 | |
1177 | return 0; |
1178 | } |
1179 | |
1180 | #ifdef CONFIG_PM |
1181 | static int sis_suspend(struct pci_dev *pci, pm_message_t state) |
1182 | { |
1183 | struct snd_card *card = pci_get_drvdata(pci); |
1184 | struct sis7019 *sis = card->private_data; |
1185 | void __iomem *ioaddr = sis->ioaddr; |
1186 | int i; |
1187 | |
1188 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1189 | snd_pcm_suspend_all(sis->pcm); |
1190 | if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
1191 | snd_ac97_suspend(sis->ac97[0]); |
1192 | if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) |
1193 | snd_ac97_suspend(sis->ac97[1]); |
1194 | if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) |
1195 | snd_ac97_suspend(sis->ac97[2]); |
1196 | |
1197 | /* snd_pcm_suspend_all() stopped all channels, so we're quiescent. |
1198 | */ |
1199 | if (sis->irq >= 0) { |
1200 | free_irq(sis->irq, sis); |
1201 | sis->irq = -1; |
1202 | } |
1203 | |
1204 | /* Save the internal state away |
1205 | */ |
1206 | for (i = 0; i < 4; i++) { |
1207 | memcpy_fromio(sis->suspend_state[i], ioaddr, 4096); |
1208 | ioaddr += 4096; |
1209 | } |
1210 | |
1211 | pci_disable_device(pci); |
1212 | pci_save_state(pci); |
1213 | pci_set_power_state(pci, pci_choose_state(pci, state)); |
1214 | return 0; |
1215 | } |
1216 | |
1217 | static int sis_resume(struct pci_dev *pci) |
1218 | { |
1219 | struct snd_card *card = pci_get_drvdata(pci); |
1220 | struct sis7019 *sis = card->private_data; |
1221 | void __iomem *ioaddr = sis->ioaddr; |
1222 | int i; |
1223 | |
1224 | pci_set_power_state(pci, PCI_D0); |
1225 | pci_restore_state(pci); |
1226 | |
1227 | if (pci_enable_device(pci) < 0) { |
1228 | printk(KERN_ERR "sis7019: unable to re-enable device\n"); |
1229 | goto error; |
1230 | } |
1231 | |
1232 | if (sis_chip_init(sis)) { |
1233 | printk(KERN_ERR "sis7019: unable to re-init controller\n"); |
1234 | goto error; |
1235 | } |
1236 | |
1237 | if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED, |
1238 | card->shortname, sis)) { |
1239 | printk(KERN_ERR "sis7019: unable to regain IRQ %d\n", pci->irq); |
1240 | goto error; |
1241 | } |
1242 | |
1243 | /* Restore saved state, then clear out the page we use for the |
1244 | * silence buffer. |
1245 | */ |
1246 | for (i = 0; i < 4; i++) { |
1247 | memcpy_toio(ioaddr, sis->suspend_state[i], 4096); |
1248 | ioaddr += 4096; |
1249 | } |
1250 | |
1251 | memset(sis->suspend_state[0], 0, 4096); |
1252 | |
1253 | sis->irq = pci->irq; |
1254 | pci_set_master(pci); |
1255 | |
1256 | if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
1257 | snd_ac97_resume(sis->ac97[0]); |
1258 | if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) |
1259 | snd_ac97_resume(sis->ac97[1]); |
1260 | if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) |
1261 | snd_ac97_resume(sis->ac97[2]); |
1262 | |
1263 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1264 | return 0; |
1265 | |
1266 | error: |
1267 | snd_card_disconnect(card); |
1268 | return -EIO; |
1269 | } |
1270 | #endif /* CONFIG_PM */ |
1271 | |
1272 | static int sis_alloc_suspend(struct sis7019 *sis) |
1273 | { |
1274 | int i; |
1275 | |
1276 | /* We need 16K to store the internal wave engine state during a |
1277 | * suspend, but we don't need it to be contiguous, so play nice |
1278 | * with the memory system. We'll also use this area for a silence |
1279 | * buffer. |
1280 | */ |
1281 | for (i = 0; i < SIS_SUSPEND_PAGES; i++) { |
1282 | sis->suspend_state[i] = kmalloc(4096, GFP_KERNEL); |
1283 | if (!sis->suspend_state[i]) |
1284 | return -ENOMEM; |
1285 | } |
1286 | memset(sis->suspend_state[0], 0, 4096); |
1287 | |
1288 | return 0; |
1289 | } |
1290 | |
1291 | static int __devinit sis_chip_create(struct snd_card *card, |
1292 | struct pci_dev *pci) |
1293 | { |
1294 | struct sis7019 *sis = card->private_data; |
1295 | struct voice *voice; |
1296 | static struct snd_device_ops ops = { |
1297 | .dev_free = sis_dev_free, |
1298 | }; |
1299 | int rc; |
1300 | int i; |
1301 | |
1302 | rc = pci_enable_device(pci); |
1303 | if (rc) |
1304 | goto error_out; |
1305 | |
1306 | if (pci_set_dma_mask(pci, DMA_BIT_MASK(30)) < 0) { |
1307 | printk(KERN_ERR "sis7019: architecture does not support " |
1308 | "30-bit PCI busmaster DMA"); |
1309 | goto error_out_enabled; |
1310 | } |
1311 | |
1312 | memset(sis, 0, sizeof(*sis)); |
1313 | mutex_init(&sis->ac97_mutex); |
1314 | spin_lock_init(&sis->voice_lock); |
1315 | sis->card = card; |
1316 | sis->pci = pci; |
1317 | sis->irq = -1; |
1318 | sis->ioport = pci_resource_start(pci, 0); |
1319 | |
1320 | rc = pci_request_regions(pci, "SiS7019"); |
1321 | if (rc) { |
1322 | printk(KERN_ERR "sis7019: unable request regions\n"); |
1323 | goto error_out_enabled; |
1324 | } |
1325 | |
1326 | rc = -EIO; |
1327 | sis->ioaddr = ioremap_nocache(pci_resource_start(pci, 1), 0x4000); |
1328 | if (!sis->ioaddr) { |
1329 | printk(KERN_ERR "sis7019: unable to remap MMIO, aborting\n"); |
1330 | goto error_out_cleanup; |
1331 | } |
1332 | |
1333 | rc = sis_alloc_suspend(sis); |
1334 | if (rc < 0) { |
1335 | printk(KERN_ERR "sis7019: unable to allocate state storage\n"); |
1336 | goto error_out_cleanup; |
1337 | } |
1338 | |
1339 | rc = sis_chip_init(sis); |
1340 | if (rc) |
1341 | goto error_out_cleanup; |
1342 | |
1343 | if (request_irq(pci->irq, sis_interrupt, IRQF_DISABLED|IRQF_SHARED, |
1344 | card->shortname, sis)) { |
1345 | printk(KERN_ERR "unable to allocate irq %d\n", sis->irq); |
1346 | goto error_out_cleanup; |
1347 | } |
1348 | |
1349 | sis->irq = pci->irq; |
1350 | pci_set_master(pci); |
1351 | |
1352 | for (i = 0; i < 64; i++) { |
1353 | voice = &sis->voices[i]; |
1354 | voice->num = i; |
1355 | voice->ctrl_base = SIS_PLAY_DMA_ADDR(sis->ioaddr, i); |
1356 | voice->wave_base = SIS_WAVE_ADDR(sis->ioaddr, i); |
1357 | } |
1358 | |
1359 | voice = &sis->capture_voice; |
1360 | voice->flags = VOICE_CAPTURE; |
1361 | voice->num = SIS_CAPTURE_CHAN_AC97_PCM_IN; |
1362 | voice->ctrl_base = SIS_CAPTURE_DMA_ADDR(sis->ioaddr, voice->num); |
1363 | |
1364 | rc = snd_device_new(card, SNDRV_DEV_LOWLEVEL, sis, &ops); |
1365 | if (rc) |
1366 | goto error_out_cleanup; |
1367 | |
1368 | snd_card_set_dev(card, &pci->dev); |
1369 | |
1370 | return 0; |
1371 | |
1372 | error_out_cleanup: |
1373 | sis_chip_free(sis); |
1374 | |
1375 | error_out_enabled: |
1376 | pci_disable_device(pci); |
1377 | |
1378 | error_out: |
1379 | return rc; |
1380 | } |
1381 | |
1382 | static int __devinit snd_sis7019_probe(struct pci_dev *pci, |
1383 | const struct pci_device_id *pci_id) |
1384 | { |
1385 | struct snd_card *card; |
1386 | struct sis7019 *sis; |
1387 | int rc; |
1388 | |
1389 | rc = -ENOENT; |
1390 | if (!enable) |
1391 | goto error_out; |
1392 | |
1393 | rc = snd_card_create(index, id, THIS_MODULE, sizeof(*sis), &card); |
1394 | if (rc < 0) |
1395 | goto error_out; |
1396 | |
1397 | strcpy(card->driver, "SiS7019"); |
1398 | strcpy(card->shortname, "SiS7019"); |
1399 | rc = sis_chip_create(card, pci); |
1400 | if (rc) |
1401 | goto card_error_out; |
1402 | |
1403 | sis = card->private_data; |
1404 | |
1405 | rc = sis_mixer_create(sis); |
1406 | if (rc) |
1407 | goto card_error_out; |
1408 | |
1409 | rc = sis_pcm_create(sis); |
1410 | if (rc) |
1411 | goto card_error_out; |
1412 | |
1413 | snprintf(card->longname, sizeof(card->longname), |
1414 | "%s Audio Accelerator with %s at 0x%lx, irq %d", |
1415 | card->shortname, snd_ac97_get_short_name(sis->ac97[0]), |
1416 | sis->ioport, sis->irq); |
1417 | |
1418 | rc = snd_card_register(card); |
1419 | if (rc) |
1420 | goto card_error_out; |
1421 | |
1422 | pci_set_drvdata(pci, card); |
1423 | return 0; |
1424 | |
1425 | card_error_out: |
1426 | snd_card_free(card); |
1427 | |
1428 | error_out: |
1429 | return rc; |
1430 | } |
1431 | |
1432 | static void __devexit snd_sis7019_remove(struct pci_dev *pci) |
1433 | { |
1434 | snd_card_free(pci_get_drvdata(pci)); |
1435 | pci_set_drvdata(pci, NULL); |
1436 | } |
1437 | |
1438 | static struct pci_driver sis7019_driver = { |
1439 | .name = "SiS7019", |
1440 | .id_table = snd_sis7019_ids, |
1441 | .probe = snd_sis7019_probe, |
1442 | .remove = __devexit_p(snd_sis7019_remove), |
1443 | |
1444 | #ifdef CONFIG_PM |
1445 | .suspend = sis_suspend, |
1446 | .resume = sis_resume, |
1447 | #endif |
1448 | }; |
1449 | |
1450 | static int __init sis7019_init(void) |
1451 | { |
1452 | return pci_register_driver(&sis7019_driver); |
1453 | } |
1454 | |
1455 | static void __exit sis7019_exit(void) |
1456 | { |
1457 | pci_unregister_driver(&sis7019_driver); |
1458 | } |
1459 | |
1460 | module_init(sis7019_init); |
1461 | module_exit(sis7019_exit); |
1462 |
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