1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Driver for SiS7019 Audio Accelerator |
4 | * |
5 | * Copyright (C) 2004-2007, David Dillow |
6 | * Written by David Dillow <dave@thedillows.org> |
7 | * Inspired by the Trident 4D-WaveDX/NX driver. |
8 | * |
9 | * All rights reserved. |
10 | */ |
11 | |
12 | #include <linux/init.h> |
13 | #include <linux/pci.h> |
14 | #include <linux/time.h> |
15 | #include <linux/slab.h> |
16 | #include <linux/module.h> |
17 | #include <linux/interrupt.h> |
18 | #include <linux/delay.h> |
19 | #include <sound/core.h> |
20 | #include <sound/ac97_codec.h> |
21 | #include <sound/initval.h> |
22 | #include "sis7019.h" |
23 | |
24 | MODULE_AUTHOR("David Dillow <dave@thedillows.org>" ); |
25 | MODULE_DESCRIPTION("SiS7019" ); |
26 | MODULE_LICENSE("GPL" ); |
27 | |
28 | static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ |
29 | static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ |
30 | static bool enable = 1; |
31 | static int codecs = 1; |
32 | |
33 | module_param(index, int, 0444); |
34 | MODULE_PARM_DESC(index, "Index value for SiS7019 Audio Accelerator." ); |
35 | module_param(id, charp, 0444); |
36 | MODULE_PARM_DESC(id, "ID string for SiS7019 Audio Accelerator." ); |
37 | module_param(enable, bool, 0444); |
38 | MODULE_PARM_DESC(enable, "Enable SiS7019 Audio Accelerator." ); |
39 | module_param(codecs, int, 0444); |
40 | MODULE_PARM_DESC(codecs, "Set bit to indicate that codec number is expected to be present (default 1)" ); |
41 | |
42 | static const struct pci_device_id snd_sis7019_ids[] = { |
43 | { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x7019) }, |
44 | { 0, } |
45 | }; |
46 | |
47 | MODULE_DEVICE_TABLE(pci, snd_sis7019_ids); |
48 | |
49 | /* There are three timing modes for the voices. |
50 | * |
51 | * For both playback and capture, when the buffer is one or two periods long, |
52 | * we use the hardware's built-in Mid-Loop Interrupt and End-Loop Interrupt |
53 | * to let us know when the periods have ended. |
54 | * |
55 | * When performing playback with more than two periods per buffer, we set |
56 | * the "Stop Sample Offset" and tell the hardware to interrupt us when we |
57 | * reach it. We then update the offset and continue on until we are |
58 | * interrupted for the next period. |
59 | * |
60 | * Capture channels do not have a SSO, so we allocate a playback channel to |
61 | * use as a timer for the capture periods. We use the SSO on the playback |
62 | * channel to clock out virtual periods, and adjust the virtual period length |
63 | * to maintain synchronization. This algorithm came from the Trident driver. |
64 | * |
65 | * FIXME: It'd be nice to make use of some of the synth features in the |
66 | * hardware, but a woeful lack of documentation is a significant roadblock. |
67 | */ |
68 | struct voice { |
69 | u16 flags; |
70 | #define VOICE_IN_USE 1 |
71 | #define VOICE_CAPTURE 2 |
72 | #define VOICE_SSO_TIMING 4 |
73 | #define VOICE_SYNC_TIMING 8 |
74 | u16 sync_cso; |
75 | u16 period_size; |
76 | u16 buffer_size; |
77 | u16 sync_period_size; |
78 | u16 sync_buffer_size; |
79 | u32 sso; |
80 | u32 vperiod; |
81 | struct snd_pcm_substream *substream; |
82 | struct voice *timing; |
83 | void __iomem *ctrl_base; |
84 | void __iomem *wave_base; |
85 | void __iomem *sync_base; |
86 | int num; |
87 | }; |
88 | |
89 | /* We need four pages to store our wave parameters during a suspend. If |
90 | * we're not doing power management, we still need to allocate a page |
91 | * for the silence buffer. |
92 | */ |
93 | #ifdef CONFIG_PM_SLEEP |
94 | #define SIS_SUSPEND_PAGES 4 |
95 | #else |
96 | #define SIS_SUSPEND_PAGES 1 |
97 | #endif |
98 | |
99 | struct sis7019 { |
100 | unsigned long ioport; |
101 | void __iomem *ioaddr; |
102 | int irq; |
103 | int codecs_present; |
104 | |
105 | struct pci_dev *pci; |
106 | struct snd_pcm *pcm; |
107 | struct snd_card *card; |
108 | struct snd_ac97 *ac97[3]; |
109 | |
110 | /* Protect against more than one thread hitting the AC97 |
111 | * registers (in a more polite manner than pounding the hardware |
112 | * semaphore) |
113 | */ |
114 | struct mutex ac97_mutex; |
115 | |
116 | /* voice_lock protects allocation/freeing of the voice descriptions |
117 | */ |
118 | spinlock_t voice_lock; |
119 | |
120 | struct voice voices[64]; |
121 | struct voice capture_voice; |
122 | |
123 | /* Allocate pages to store the internal wave state during |
124 | * suspends. When we're operating, this can be used as a silence |
125 | * buffer for a timing channel. |
126 | */ |
127 | void *suspend_state[SIS_SUSPEND_PAGES]; |
128 | |
129 | int silence_users; |
130 | dma_addr_t silence_dma_addr; |
131 | }; |
132 | |
133 | /* These values are also used by the module param 'codecs' to indicate |
134 | * which codecs should be present. |
135 | */ |
136 | #define SIS_PRIMARY_CODEC_PRESENT 0x0001 |
137 | #define SIS_SECONDARY_CODEC_PRESENT 0x0002 |
138 | #define SIS_TERTIARY_CODEC_PRESENT 0x0004 |
139 | |
140 | /* The HW offset parameters (Loop End, Stop Sample, End Sample) have a |
141 | * documented range of 8-0xfff8 samples. Given that they are 0-based, |
142 | * that places our period/buffer range at 9-0xfff9 samples. That makes the |
143 | * max buffer size 0xfff9 samples * 2 channels * 2 bytes per sample, and |
144 | * max samples / min samples gives us the max periods in a buffer. |
145 | * |
146 | * We'll add a constraint upon open that limits the period and buffer sample |
147 | * size to values that are legal for the hardware. |
148 | */ |
149 | static const struct snd_pcm_hardware sis_playback_hw_info = { |
150 | .info = (SNDRV_PCM_INFO_MMAP | |
151 | SNDRV_PCM_INFO_MMAP_VALID | |
152 | SNDRV_PCM_INFO_INTERLEAVED | |
153 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
154 | SNDRV_PCM_INFO_SYNC_START | |
155 | SNDRV_PCM_INFO_RESUME), |
156 | .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | |
157 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), |
158 | .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, |
159 | .rate_min = 4000, |
160 | .rate_max = 48000, |
161 | .channels_min = 1, |
162 | .channels_max = 2, |
163 | .buffer_bytes_max = (0xfff9 * 4), |
164 | .period_bytes_min = 9, |
165 | .period_bytes_max = (0xfff9 * 4), |
166 | .periods_min = 1, |
167 | .periods_max = (0xfff9 / 9), |
168 | }; |
169 | |
170 | static const struct snd_pcm_hardware sis_capture_hw_info = { |
171 | .info = (SNDRV_PCM_INFO_MMAP | |
172 | SNDRV_PCM_INFO_MMAP_VALID | |
173 | SNDRV_PCM_INFO_INTERLEAVED | |
174 | SNDRV_PCM_INFO_BLOCK_TRANSFER | |
175 | SNDRV_PCM_INFO_SYNC_START | |
176 | SNDRV_PCM_INFO_RESUME), |
177 | .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | |
178 | SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE), |
179 | .rates = SNDRV_PCM_RATE_48000, |
180 | .rate_min = 4000, |
181 | .rate_max = 48000, |
182 | .channels_min = 1, |
183 | .channels_max = 2, |
184 | .buffer_bytes_max = (0xfff9 * 4), |
185 | .period_bytes_min = 9, |
186 | .period_bytes_max = (0xfff9 * 4), |
187 | .periods_min = 1, |
188 | .periods_max = (0xfff9 / 9), |
189 | }; |
190 | |
191 | static void sis_update_sso(struct voice *voice, u16 period) |
192 | { |
193 | void __iomem *base = voice->ctrl_base; |
194 | |
195 | voice->sso += period; |
196 | if (voice->sso >= voice->buffer_size) |
197 | voice->sso -= voice->buffer_size; |
198 | |
199 | /* Enforce the documented hardware minimum offset */ |
200 | if (voice->sso < 8) |
201 | voice->sso = 8; |
202 | |
203 | /* The SSO is in the upper 16 bits of the register. */ |
204 | writew(val: voice->sso & 0xffff, addr: base + SIS_PLAY_DMA_SSO_ESO + 2); |
205 | } |
206 | |
207 | static void sis_update_voice(struct voice *voice) |
208 | { |
209 | if (voice->flags & VOICE_SSO_TIMING) { |
210 | sis_update_sso(voice, period: voice->period_size); |
211 | } else if (voice->flags & VOICE_SYNC_TIMING) { |
212 | int sync; |
213 | |
214 | /* If we've not hit the end of the virtual period, update |
215 | * our records and keep going. |
216 | */ |
217 | if (voice->vperiod > voice->period_size) { |
218 | voice->vperiod -= voice->period_size; |
219 | if (voice->vperiod < voice->period_size) |
220 | sis_update_sso(voice, period: voice->vperiod); |
221 | else |
222 | sis_update_sso(voice, period: voice->period_size); |
223 | return; |
224 | } |
225 | |
226 | /* Calculate our relative offset between the target and |
227 | * the actual CSO value. Since we're operating in a loop, |
228 | * if the value is more than half way around, we can |
229 | * consider ourselves wrapped. |
230 | */ |
231 | sync = voice->sync_cso; |
232 | sync -= readw(addr: voice->sync_base + SIS_CAPTURE_DMA_FORMAT_CSO); |
233 | if (sync > (voice->sync_buffer_size / 2)) |
234 | sync -= voice->sync_buffer_size; |
235 | |
236 | /* If sync is positive, then we interrupted too early, and |
237 | * we'll need to come back in a few samples and try again. |
238 | * There's a minimum wait, as it takes some time for the DMA |
239 | * engine to startup, etc... |
240 | */ |
241 | if (sync > 0) { |
242 | if (sync < 16) |
243 | sync = 16; |
244 | sis_update_sso(voice, period: sync); |
245 | return; |
246 | } |
247 | |
248 | /* Ok, we interrupted right on time, or (hopefully) just |
249 | * a bit late. We'll adjst our next waiting period based |
250 | * on how close we got. |
251 | * |
252 | * We need to stay just behind the actual channel to ensure |
253 | * it really is past a period when we get our interrupt -- |
254 | * otherwise we'll fall into the early code above and have |
255 | * a minimum wait time, which makes us quite late here, |
256 | * eating into the user's time to refresh the buffer, esp. |
257 | * if using small periods. |
258 | * |
259 | * If we're less than 9 samples behind, we're on target. |
260 | * Otherwise, shorten the next vperiod by the amount we've |
261 | * been delayed. |
262 | */ |
263 | if (sync > -9) |
264 | voice->vperiod = voice->sync_period_size + 1; |
265 | else |
266 | voice->vperiod = voice->sync_period_size + sync + 10; |
267 | |
268 | if (voice->vperiod < voice->buffer_size) { |
269 | sis_update_sso(voice, period: voice->vperiod); |
270 | voice->vperiod = 0; |
271 | } else |
272 | sis_update_sso(voice, period: voice->period_size); |
273 | |
274 | sync = voice->sync_cso + voice->sync_period_size; |
275 | if (sync >= voice->sync_buffer_size) |
276 | sync -= voice->sync_buffer_size; |
277 | voice->sync_cso = sync; |
278 | } |
279 | |
280 | snd_pcm_period_elapsed(substream: voice->substream); |
281 | } |
282 | |
283 | static void sis_voice_irq(u32 status, struct voice *voice) |
284 | { |
285 | int bit; |
286 | |
287 | while (status) { |
288 | bit = __ffs(status); |
289 | status >>= bit + 1; |
290 | voice += bit; |
291 | sis_update_voice(voice); |
292 | voice++; |
293 | } |
294 | } |
295 | |
296 | static irqreturn_t sis_interrupt(int irq, void *dev) |
297 | { |
298 | struct sis7019 *sis = dev; |
299 | unsigned long io = sis->ioport; |
300 | struct voice *voice; |
301 | u32 intr, status; |
302 | |
303 | /* We only use the DMA interrupts, and we don't enable any other |
304 | * source of interrupts. But, it is possible to see an interrupt |
305 | * status that didn't actually interrupt us, so eliminate anything |
306 | * we're not expecting to avoid falsely claiming an IRQ, and an |
307 | * ensuing endless loop. |
308 | */ |
309 | intr = inl(port: io + SIS_GISR); |
310 | intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | |
311 | SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; |
312 | if (!intr) |
313 | return IRQ_NONE; |
314 | |
315 | do { |
316 | status = inl(port: io + SIS_PISR_A); |
317 | if (status) { |
318 | sis_voice_irq(status, voice: sis->voices); |
319 | outl(value: status, port: io + SIS_PISR_A); |
320 | } |
321 | |
322 | status = inl(port: io + SIS_PISR_B); |
323 | if (status) { |
324 | sis_voice_irq(status, voice: &sis->voices[32]); |
325 | outl(value: status, port: io + SIS_PISR_B); |
326 | } |
327 | |
328 | status = inl(port: io + SIS_RISR); |
329 | if (status) { |
330 | voice = &sis->capture_voice; |
331 | if (!voice->timing) |
332 | snd_pcm_period_elapsed(substream: voice->substream); |
333 | |
334 | outl(value: status, port: io + SIS_RISR); |
335 | } |
336 | |
337 | outl(value: intr, port: io + SIS_GISR); |
338 | intr = inl(port: io + SIS_GISR); |
339 | intr &= SIS_GISR_AUDIO_PLAY_DMA_IRQ_STATUS | |
340 | SIS_GISR_AUDIO_RECORD_DMA_IRQ_STATUS; |
341 | } while (intr); |
342 | |
343 | return IRQ_HANDLED; |
344 | } |
345 | |
346 | static u32 sis_rate_to_delta(unsigned int rate) |
347 | { |
348 | u32 delta; |
349 | |
350 | /* This was copied from the trident driver, but it seems its gotten |
351 | * around a bit... nevertheless, it works well. |
352 | * |
353 | * We special case 44100 and 8000 since rounding with the equation |
354 | * does not give us an accurate enough value. For 11025 and 22050 |
355 | * the equation gives us the best answer. All other frequencies will |
356 | * also use the equation. JDW |
357 | */ |
358 | if (rate == 44100) |
359 | delta = 0xeb3; |
360 | else if (rate == 8000) |
361 | delta = 0x2ab; |
362 | else if (rate == 48000) |
363 | delta = 0x1000; |
364 | else |
365 | delta = DIV_ROUND_CLOSEST(rate << 12, 48000) & 0x0000ffff; |
366 | return delta; |
367 | } |
368 | |
369 | static void __sis_map_silence(struct sis7019 *sis) |
370 | { |
371 | /* Helper function: must hold sis->voice_lock on entry */ |
372 | if (!sis->silence_users) |
373 | sis->silence_dma_addr = dma_map_single(&sis->pci->dev, |
374 | sis->suspend_state[0], |
375 | 4096, DMA_TO_DEVICE); |
376 | sis->silence_users++; |
377 | } |
378 | |
379 | static void __sis_unmap_silence(struct sis7019 *sis) |
380 | { |
381 | /* Helper function: must hold sis->voice_lock on entry */ |
382 | sis->silence_users--; |
383 | if (!sis->silence_users) |
384 | dma_unmap_single(&sis->pci->dev, sis->silence_dma_addr, 4096, |
385 | DMA_TO_DEVICE); |
386 | } |
387 | |
388 | static void sis_free_voice(struct sis7019 *sis, struct voice *voice) |
389 | { |
390 | unsigned long flags; |
391 | |
392 | spin_lock_irqsave(&sis->voice_lock, flags); |
393 | if (voice->timing) { |
394 | __sis_unmap_silence(sis); |
395 | voice->timing->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | |
396 | VOICE_SYNC_TIMING); |
397 | voice->timing = NULL; |
398 | } |
399 | voice->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | VOICE_SYNC_TIMING); |
400 | spin_unlock_irqrestore(lock: &sis->voice_lock, flags); |
401 | } |
402 | |
403 | static struct voice *__sis_alloc_playback_voice(struct sis7019 *sis) |
404 | { |
405 | /* Must hold the voice_lock on entry */ |
406 | struct voice *voice; |
407 | int i; |
408 | |
409 | for (i = 0; i < 64; i++) { |
410 | voice = &sis->voices[i]; |
411 | if (voice->flags & VOICE_IN_USE) |
412 | continue; |
413 | voice->flags |= VOICE_IN_USE; |
414 | goto found_one; |
415 | } |
416 | voice = NULL; |
417 | |
418 | found_one: |
419 | return voice; |
420 | } |
421 | |
422 | static struct voice *sis_alloc_playback_voice(struct sis7019 *sis) |
423 | { |
424 | struct voice *voice; |
425 | unsigned long flags; |
426 | |
427 | spin_lock_irqsave(&sis->voice_lock, flags); |
428 | voice = __sis_alloc_playback_voice(sis); |
429 | spin_unlock_irqrestore(lock: &sis->voice_lock, flags); |
430 | |
431 | return voice; |
432 | } |
433 | |
434 | static int sis_alloc_timing_voice(struct snd_pcm_substream *substream, |
435 | struct snd_pcm_hw_params *hw_params) |
436 | { |
437 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
438 | struct snd_pcm_runtime *runtime = substream->runtime; |
439 | struct voice *voice = runtime->private_data; |
440 | unsigned int period_size, buffer_size; |
441 | unsigned long flags; |
442 | int needed; |
443 | |
444 | /* If there are one or two periods per buffer, we don't need a |
445 | * timing voice, as we can use the capture channel's interrupts |
446 | * to clock out the periods. |
447 | */ |
448 | period_size = params_period_size(p: hw_params); |
449 | buffer_size = params_buffer_size(p: hw_params); |
450 | needed = (period_size != buffer_size && |
451 | period_size != (buffer_size / 2)); |
452 | |
453 | if (needed && !voice->timing) { |
454 | spin_lock_irqsave(&sis->voice_lock, flags); |
455 | voice->timing = __sis_alloc_playback_voice(sis); |
456 | if (voice->timing) |
457 | __sis_map_silence(sis); |
458 | spin_unlock_irqrestore(lock: &sis->voice_lock, flags); |
459 | if (!voice->timing) |
460 | return -ENOMEM; |
461 | voice->timing->substream = substream; |
462 | } else if (!needed && voice->timing) { |
463 | sis_free_voice(sis, voice); |
464 | voice->timing = NULL; |
465 | } |
466 | |
467 | return 0; |
468 | } |
469 | |
470 | static int sis_playback_open(struct snd_pcm_substream *substream) |
471 | { |
472 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
473 | struct snd_pcm_runtime *runtime = substream->runtime; |
474 | struct voice *voice; |
475 | |
476 | voice = sis_alloc_playback_voice(sis); |
477 | if (!voice) |
478 | return -EAGAIN; |
479 | |
480 | voice->substream = substream; |
481 | runtime->private_data = voice; |
482 | runtime->hw = sis_playback_hw_info; |
483 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
484 | min: 9, max: 0xfff9); |
485 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
486 | min: 9, max: 0xfff9); |
487 | snd_pcm_set_sync(substream); |
488 | return 0; |
489 | } |
490 | |
491 | static int sis_substream_close(struct snd_pcm_substream *substream) |
492 | { |
493 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
494 | struct snd_pcm_runtime *runtime = substream->runtime; |
495 | struct voice *voice = runtime->private_data; |
496 | |
497 | sis_free_voice(sis, voice); |
498 | return 0; |
499 | } |
500 | |
501 | static int sis_pcm_playback_prepare(struct snd_pcm_substream *substream) |
502 | { |
503 | struct snd_pcm_runtime *runtime = substream->runtime; |
504 | struct voice *voice = runtime->private_data; |
505 | void __iomem *ctrl_base = voice->ctrl_base; |
506 | void __iomem *wave_base = voice->wave_base; |
507 | u32 format, dma_addr, control, sso_eso, delta, reg; |
508 | u16 leo; |
509 | |
510 | /* We rely on the PCM core to ensure that the parameters for this |
511 | * substream do not change on us while we're programming the HW. |
512 | */ |
513 | format = 0; |
514 | if (snd_pcm_format_width(format: runtime->format) == 8) |
515 | format |= SIS_PLAY_DMA_FORMAT_8BIT; |
516 | if (!snd_pcm_format_signed(format: runtime->format)) |
517 | format |= SIS_PLAY_DMA_FORMAT_UNSIGNED; |
518 | if (runtime->channels == 1) |
519 | format |= SIS_PLAY_DMA_FORMAT_MONO; |
520 | |
521 | /* The baseline setup is for a single period per buffer, and |
522 | * we add bells and whistles as needed from there. |
523 | */ |
524 | dma_addr = runtime->dma_addr; |
525 | leo = runtime->buffer_size - 1; |
526 | control = leo | SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_LEO; |
527 | sso_eso = leo; |
528 | |
529 | if (runtime->period_size == (runtime->buffer_size / 2)) { |
530 | control |= SIS_PLAY_DMA_INTR_AT_MLP; |
531 | } else if (runtime->period_size != runtime->buffer_size) { |
532 | voice->flags |= VOICE_SSO_TIMING; |
533 | voice->sso = runtime->period_size - 1; |
534 | voice->period_size = runtime->period_size; |
535 | voice->buffer_size = runtime->buffer_size; |
536 | |
537 | control &= ~SIS_PLAY_DMA_INTR_AT_LEO; |
538 | control |= SIS_PLAY_DMA_INTR_AT_SSO; |
539 | sso_eso |= (runtime->period_size - 1) << 16; |
540 | } |
541 | |
542 | delta = sis_rate_to_delta(rate: runtime->rate); |
543 | |
544 | /* Ok, we're ready to go, set up the channel. |
545 | */ |
546 | writel(val: format, addr: ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); |
547 | writel(val: dma_addr, addr: ctrl_base + SIS_PLAY_DMA_BASE); |
548 | writel(val: control, addr: ctrl_base + SIS_PLAY_DMA_CONTROL); |
549 | writel(val: sso_eso, addr: ctrl_base + SIS_PLAY_DMA_SSO_ESO); |
550 | |
551 | for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) |
552 | writel(val: 0, addr: wave_base + reg); |
553 | |
554 | writel(SIS_WAVE_GENERAL_WAVE_VOLUME, addr: wave_base + SIS_WAVE_GENERAL); |
555 | writel(val: delta << 16, addr: wave_base + SIS_WAVE_GENERAL_ARTICULATION); |
556 | writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | |
557 | SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | |
558 | SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, |
559 | addr: wave_base + SIS_WAVE_CHANNEL_CONTROL); |
560 | |
561 | /* Force PCI writes to post. */ |
562 | readl(addr: ctrl_base); |
563 | |
564 | return 0; |
565 | } |
566 | |
567 | static int sis_pcm_trigger(struct snd_pcm_substream *substream, int cmd) |
568 | { |
569 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
570 | unsigned long io = sis->ioport; |
571 | struct snd_pcm_substream *s; |
572 | struct voice *voice; |
573 | void *chip; |
574 | int starting; |
575 | u32 record = 0; |
576 | u32 play[2] = { 0, 0 }; |
577 | |
578 | /* No locks needed, as the PCM core will hold the locks on the |
579 | * substreams, and the HW will only start/stop the indicated voices |
580 | * without changing the state of the others. |
581 | */ |
582 | switch (cmd) { |
583 | case SNDRV_PCM_TRIGGER_START: |
584 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: |
585 | case SNDRV_PCM_TRIGGER_RESUME: |
586 | starting = 1; |
587 | break; |
588 | case SNDRV_PCM_TRIGGER_STOP: |
589 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: |
590 | case SNDRV_PCM_TRIGGER_SUSPEND: |
591 | starting = 0; |
592 | break; |
593 | default: |
594 | return -EINVAL; |
595 | } |
596 | |
597 | snd_pcm_group_for_each_entry(s, substream) { |
598 | /* Make sure it is for us... */ |
599 | chip = snd_pcm_substream_chip(s); |
600 | if (chip != sis) |
601 | continue; |
602 | |
603 | voice = s->runtime->private_data; |
604 | if (voice->flags & VOICE_CAPTURE) { |
605 | record |= 1 << voice->num; |
606 | voice = voice->timing; |
607 | } |
608 | |
609 | /* voice could be NULL if this a recording stream, and it |
610 | * doesn't have an external timing channel. |
611 | */ |
612 | if (voice) |
613 | play[voice->num / 32] |= 1 << (voice->num & 0x1f); |
614 | |
615 | snd_pcm_trigger_done(substream: s, master: substream); |
616 | } |
617 | |
618 | if (starting) { |
619 | if (record) |
620 | outl(value: record, port: io + SIS_RECORD_START_REG); |
621 | if (play[0]) |
622 | outl(value: play[0], port: io + SIS_PLAY_START_A_REG); |
623 | if (play[1]) |
624 | outl(value: play[1], port: io + SIS_PLAY_START_B_REG); |
625 | } else { |
626 | if (record) |
627 | outl(value: record, port: io + SIS_RECORD_STOP_REG); |
628 | if (play[0]) |
629 | outl(value: play[0], port: io + SIS_PLAY_STOP_A_REG); |
630 | if (play[1]) |
631 | outl(value: play[1], port: io + SIS_PLAY_STOP_B_REG); |
632 | } |
633 | return 0; |
634 | } |
635 | |
636 | static snd_pcm_uframes_t sis_pcm_pointer(struct snd_pcm_substream *substream) |
637 | { |
638 | struct snd_pcm_runtime *runtime = substream->runtime; |
639 | struct voice *voice = runtime->private_data; |
640 | u32 cso; |
641 | |
642 | cso = readl(addr: voice->ctrl_base + SIS_PLAY_DMA_FORMAT_CSO); |
643 | cso &= 0xffff; |
644 | return cso; |
645 | } |
646 | |
647 | static int sis_capture_open(struct snd_pcm_substream *substream) |
648 | { |
649 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
650 | struct snd_pcm_runtime *runtime = substream->runtime; |
651 | struct voice *voice = &sis->capture_voice; |
652 | unsigned long flags; |
653 | |
654 | /* FIXME: The driver only supports recording from one channel |
655 | * at the moment, but it could support more. |
656 | */ |
657 | spin_lock_irqsave(&sis->voice_lock, flags); |
658 | if (voice->flags & VOICE_IN_USE) |
659 | voice = NULL; |
660 | else |
661 | voice->flags |= VOICE_IN_USE; |
662 | spin_unlock_irqrestore(lock: &sis->voice_lock, flags); |
663 | |
664 | if (!voice) |
665 | return -EAGAIN; |
666 | |
667 | voice->substream = substream; |
668 | runtime->private_data = voice; |
669 | runtime->hw = sis_capture_hw_info; |
670 | runtime->hw.rates = sis->ac97[0]->rates[AC97_RATES_ADC]; |
671 | snd_pcm_limit_hw_rates(runtime); |
672 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, |
673 | min: 9, max: 0xfff9); |
674 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, |
675 | min: 9, max: 0xfff9); |
676 | snd_pcm_set_sync(substream); |
677 | return 0; |
678 | } |
679 | |
680 | static int sis_capture_hw_params(struct snd_pcm_substream *substream, |
681 | struct snd_pcm_hw_params *hw_params) |
682 | { |
683 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
684 | int rc; |
685 | |
686 | rc = snd_ac97_set_rate(ac97: sis->ac97[0], AC97_PCM_LR_ADC_RATE, |
687 | rate: params_rate(p: hw_params)); |
688 | if (rc) |
689 | goto out; |
690 | |
691 | rc = sis_alloc_timing_voice(substream, hw_params); |
692 | |
693 | out: |
694 | return rc; |
695 | } |
696 | |
697 | static void sis_prepare_timing_voice(struct voice *voice, |
698 | struct snd_pcm_substream *substream) |
699 | { |
700 | struct sis7019 *sis = snd_pcm_substream_chip(substream); |
701 | struct snd_pcm_runtime *runtime = substream->runtime; |
702 | struct voice *timing = voice->timing; |
703 | void __iomem *play_base = timing->ctrl_base; |
704 | void __iomem *wave_base = timing->wave_base; |
705 | u16 buffer_size, period_size; |
706 | u32 format, control, sso_eso, delta; |
707 | u32 vperiod, sso, reg; |
708 | |
709 | /* Set our initial buffer and period as large as we can given a |
710 | * single page of silence. |
711 | */ |
712 | buffer_size = 4096 / runtime->channels; |
713 | buffer_size /= snd_pcm_format_size(format: runtime->format, samples: 1); |
714 | period_size = buffer_size; |
715 | |
716 | /* Initially, we want to interrupt just a bit behind the end of |
717 | * the period we're clocking out. 12 samples seems to give a good |
718 | * delay. |
719 | * |
720 | * We want to spread our interrupts throughout the virtual period, |
721 | * so that we don't end up with two interrupts back to back at the |
722 | * end -- this helps minimize the effects of any jitter. Adjust our |
723 | * clocking period size so that the last period is at least a fourth |
724 | * of a full period. |
725 | * |
726 | * This is all moot if we don't need to use virtual periods. |
727 | */ |
728 | vperiod = runtime->period_size + 12; |
729 | if (vperiod > period_size) { |
730 | u16 tail = vperiod % period_size; |
731 | u16 quarter_period = period_size / 4; |
732 | |
733 | if (tail && tail < quarter_period) { |
734 | u16 loops = vperiod / period_size; |
735 | |
736 | tail = quarter_period - tail; |
737 | tail += loops - 1; |
738 | tail /= loops; |
739 | period_size -= tail; |
740 | } |
741 | |
742 | sso = period_size - 1; |
743 | } else { |
744 | /* The initial period will fit inside the buffer, so we |
745 | * don't need to use virtual periods -- disable them. |
746 | */ |
747 | period_size = runtime->period_size; |
748 | sso = vperiod - 1; |
749 | vperiod = 0; |
750 | } |
751 | |
752 | /* The interrupt handler implements the timing synchronization, so |
753 | * setup its state. |
754 | */ |
755 | timing->flags |= VOICE_SYNC_TIMING; |
756 | timing->sync_base = voice->ctrl_base; |
757 | timing->sync_cso = runtime->period_size; |
758 | timing->sync_period_size = runtime->period_size; |
759 | timing->sync_buffer_size = runtime->buffer_size; |
760 | timing->period_size = period_size; |
761 | timing->buffer_size = buffer_size; |
762 | timing->sso = sso; |
763 | timing->vperiod = vperiod; |
764 | |
765 | /* Using unsigned samples with the all-zero silence buffer |
766 | * forces the output to the lower rail, killing playback. |
767 | * So ignore unsigned vs signed -- it doesn't change the timing. |
768 | */ |
769 | format = 0; |
770 | if (snd_pcm_format_width(format: runtime->format) == 8) |
771 | format = SIS_CAPTURE_DMA_FORMAT_8BIT; |
772 | if (runtime->channels == 1) |
773 | format |= SIS_CAPTURE_DMA_FORMAT_MONO; |
774 | |
775 | control = timing->buffer_size - 1; |
776 | control |= SIS_PLAY_DMA_LOOP | SIS_PLAY_DMA_INTR_AT_SSO; |
777 | sso_eso = timing->buffer_size - 1; |
778 | sso_eso |= timing->sso << 16; |
779 | |
780 | delta = sis_rate_to_delta(rate: runtime->rate); |
781 | |
782 | /* We've done the math, now configure the channel. |
783 | */ |
784 | writel(val: format, addr: play_base + SIS_PLAY_DMA_FORMAT_CSO); |
785 | writel(val: sis->silence_dma_addr, addr: play_base + SIS_PLAY_DMA_BASE); |
786 | writel(val: control, addr: play_base + SIS_PLAY_DMA_CONTROL); |
787 | writel(val: sso_eso, addr: play_base + SIS_PLAY_DMA_SSO_ESO); |
788 | |
789 | for (reg = 0; reg < SIS_WAVE_SIZE; reg += 4) |
790 | writel(val: 0, addr: wave_base + reg); |
791 | |
792 | writel(SIS_WAVE_GENERAL_WAVE_VOLUME, addr: wave_base + SIS_WAVE_GENERAL); |
793 | writel(val: delta << 16, addr: wave_base + SIS_WAVE_GENERAL_ARTICULATION); |
794 | writel(SIS_WAVE_CHANNEL_CONTROL_FIRST_SAMPLE | |
795 | SIS_WAVE_CHANNEL_CONTROL_AMP_ENABLE | |
796 | SIS_WAVE_CHANNEL_CONTROL_INTERPOLATE_ENABLE, |
797 | addr: wave_base + SIS_WAVE_CHANNEL_CONTROL); |
798 | } |
799 | |
800 | static int sis_pcm_capture_prepare(struct snd_pcm_substream *substream) |
801 | { |
802 | struct snd_pcm_runtime *runtime = substream->runtime; |
803 | struct voice *voice = runtime->private_data; |
804 | void __iomem *rec_base = voice->ctrl_base; |
805 | u32 format, dma_addr, control; |
806 | u16 leo; |
807 | |
808 | /* We rely on the PCM core to ensure that the parameters for this |
809 | * substream do not change on us while we're programming the HW. |
810 | */ |
811 | format = 0; |
812 | if (snd_pcm_format_width(format: runtime->format) == 8) |
813 | format = SIS_CAPTURE_DMA_FORMAT_8BIT; |
814 | if (!snd_pcm_format_signed(format: runtime->format)) |
815 | format |= SIS_CAPTURE_DMA_FORMAT_UNSIGNED; |
816 | if (runtime->channels == 1) |
817 | format |= SIS_CAPTURE_DMA_FORMAT_MONO; |
818 | |
819 | dma_addr = runtime->dma_addr; |
820 | leo = runtime->buffer_size - 1; |
821 | control = leo | SIS_CAPTURE_DMA_LOOP; |
822 | |
823 | /* If we've got more than two periods per buffer, then we have |
824 | * use a timing voice to clock out the periods. Otherwise, we can |
825 | * use the capture channel's interrupts. |
826 | */ |
827 | if (voice->timing) { |
828 | sis_prepare_timing_voice(voice, substream); |
829 | } else { |
830 | control |= SIS_CAPTURE_DMA_INTR_AT_LEO; |
831 | if (runtime->period_size != runtime->buffer_size) |
832 | control |= SIS_CAPTURE_DMA_INTR_AT_MLP; |
833 | } |
834 | |
835 | writel(val: format, addr: rec_base + SIS_CAPTURE_DMA_FORMAT_CSO); |
836 | writel(val: dma_addr, addr: rec_base + SIS_CAPTURE_DMA_BASE); |
837 | writel(val: control, addr: rec_base + SIS_CAPTURE_DMA_CONTROL); |
838 | |
839 | /* Force the writes to post. */ |
840 | readl(addr: rec_base); |
841 | |
842 | return 0; |
843 | } |
844 | |
845 | static const struct snd_pcm_ops sis_playback_ops = { |
846 | .open = sis_playback_open, |
847 | .close = sis_substream_close, |
848 | .prepare = sis_pcm_playback_prepare, |
849 | .trigger = sis_pcm_trigger, |
850 | .pointer = sis_pcm_pointer, |
851 | }; |
852 | |
853 | static const struct snd_pcm_ops sis_capture_ops = { |
854 | .open = sis_capture_open, |
855 | .close = sis_substream_close, |
856 | .hw_params = sis_capture_hw_params, |
857 | .prepare = sis_pcm_capture_prepare, |
858 | .trigger = sis_pcm_trigger, |
859 | .pointer = sis_pcm_pointer, |
860 | }; |
861 | |
862 | static int sis_pcm_create(struct sis7019 *sis) |
863 | { |
864 | struct snd_pcm *pcm; |
865 | int rc; |
866 | |
867 | /* We have 64 voices, and the driver currently records from |
868 | * only one channel, though that could change in the future. |
869 | */ |
870 | rc = snd_pcm_new(card: sis->card, id: "SiS7019" , device: 0, playback_count: 64, capture_count: 1, rpcm: &pcm); |
871 | if (rc) |
872 | return rc; |
873 | |
874 | pcm->private_data = sis; |
875 | strcpy(p: pcm->name, q: "SiS7019" ); |
876 | sis->pcm = pcm; |
877 | |
878 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_PLAYBACK, ops: &sis_playback_ops); |
879 | snd_pcm_set_ops(pcm, direction: SNDRV_PCM_STREAM_CAPTURE, ops: &sis_capture_ops); |
880 | |
881 | /* Try to preallocate some memory, but it's not the end of the |
882 | * world if this fails. |
883 | */ |
884 | snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, |
885 | data: &sis->pci->dev, size: 64*1024, max: 128*1024); |
886 | |
887 | return 0; |
888 | } |
889 | |
890 | static unsigned short sis_ac97_rw(struct sis7019 *sis, int codec, u32 cmd) |
891 | { |
892 | unsigned long io = sis->ioport; |
893 | unsigned short val = 0xffff; |
894 | u16 status; |
895 | u16 rdy; |
896 | int count; |
897 | static const u16 codec_ready[3] = { |
898 | SIS_AC97_STATUS_CODEC_READY, |
899 | SIS_AC97_STATUS_CODEC2_READY, |
900 | SIS_AC97_STATUS_CODEC3_READY, |
901 | }; |
902 | |
903 | rdy = codec_ready[codec]; |
904 | |
905 | |
906 | /* Get the AC97 semaphore -- software first, so we don't spin |
907 | * pounding out IO reads on the hardware semaphore... |
908 | */ |
909 | mutex_lock(&sis->ac97_mutex); |
910 | |
911 | count = 0xffff; |
912 | while ((inw(port: io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) |
913 | udelay(1); |
914 | |
915 | if (!count) |
916 | goto timeout; |
917 | |
918 | /* ... and wait for any outstanding commands to complete ... |
919 | */ |
920 | count = 0xffff; |
921 | do { |
922 | status = inw(port: io + SIS_AC97_STATUS); |
923 | if ((status & rdy) && !(status & SIS_AC97_STATUS_BUSY)) |
924 | break; |
925 | |
926 | udelay(1); |
927 | } while (--count); |
928 | |
929 | if (!count) |
930 | goto timeout_sema; |
931 | |
932 | /* ... before sending our command and waiting for it to finish ... |
933 | */ |
934 | outl(value: cmd, port: io + SIS_AC97_CMD); |
935 | udelay(10); |
936 | |
937 | count = 0xffff; |
938 | while ((inw(port: io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) |
939 | udelay(1); |
940 | |
941 | /* ... and reading the results (if any). |
942 | */ |
943 | val = inl(port: io + SIS_AC97_CMD) >> 16; |
944 | |
945 | timeout_sema: |
946 | outl(SIS_AC97_SEMA_RELEASE, port: io + SIS_AC97_SEMA); |
947 | timeout: |
948 | mutex_unlock(lock: &sis->ac97_mutex); |
949 | |
950 | if (!count) { |
951 | dev_err(&sis->pci->dev, "ac97 codec %d timeout cmd 0x%08x\n" , |
952 | codec, cmd); |
953 | } |
954 | |
955 | return val; |
956 | } |
957 | |
958 | static void sis_ac97_write(struct snd_ac97 *ac97, unsigned short reg, |
959 | unsigned short val) |
960 | { |
961 | static const u32 cmd[3] = { |
962 | SIS_AC97_CMD_CODEC_WRITE, |
963 | SIS_AC97_CMD_CODEC2_WRITE, |
964 | SIS_AC97_CMD_CODEC3_WRITE, |
965 | }; |
966 | sis_ac97_rw(sis: ac97->private_data, codec: ac97->num, |
967 | cmd: (val << 16) | (reg << 8) | cmd[ac97->num]); |
968 | } |
969 | |
970 | static unsigned short sis_ac97_read(struct snd_ac97 *ac97, unsigned short reg) |
971 | { |
972 | static const u32 cmd[3] = { |
973 | SIS_AC97_CMD_CODEC_READ, |
974 | SIS_AC97_CMD_CODEC2_READ, |
975 | SIS_AC97_CMD_CODEC3_READ, |
976 | }; |
977 | return sis_ac97_rw(sis: ac97->private_data, codec: ac97->num, |
978 | cmd: (reg << 8) | cmd[ac97->num]); |
979 | } |
980 | |
981 | static int sis_mixer_create(struct sis7019 *sis) |
982 | { |
983 | struct snd_ac97_bus *bus; |
984 | struct snd_ac97_template ac97; |
985 | static const struct snd_ac97_bus_ops ops = { |
986 | .write = sis_ac97_write, |
987 | .read = sis_ac97_read, |
988 | }; |
989 | int rc; |
990 | |
991 | memset(&ac97, 0, sizeof(ac97)); |
992 | ac97.private_data = sis; |
993 | |
994 | rc = snd_ac97_bus(card: sis->card, num: 0, ops: &ops, NULL, rbus: &bus); |
995 | if (!rc && sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
996 | rc = snd_ac97_mixer(bus, template: &ac97, rac97: &sis->ac97[0]); |
997 | ac97.num = 1; |
998 | if (!rc && (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT)) |
999 | rc = snd_ac97_mixer(bus, template: &ac97, rac97: &sis->ac97[1]); |
1000 | ac97.num = 2; |
1001 | if (!rc && (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT)) |
1002 | rc = snd_ac97_mixer(bus, template: &ac97, rac97: &sis->ac97[2]); |
1003 | |
1004 | /* If we return an error here, then snd_card_free() should |
1005 | * free up any ac97 codecs that got created, as well as the bus. |
1006 | */ |
1007 | return rc; |
1008 | } |
1009 | |
1010 | static void sis_chip_free(struct snd_card *card) |
1011 | { |
1012 | struct sis7019 *sis = card->private_data; |
1013 | |
1014 | /* Reset the chip, and disable all interrputs. |
1015 | */ |
1016 | outl(SIS_GCR_SOFTWARE_RESET, port: sis->ioport + SIS_GCR); |
1017 | udelay(25); |
1018 | outl(value: 0, port: sis->ioport + SIS_GCR); |
1019 | outl(value: 0, port: sis->ioport + SIS_GIER); |
1020 | |
1021 | /* Now, free everything we allocated. |
1022 | */ |
1023 | if (sis->irq >= 0) |
1024 | free_irq(sis->irq, sis); |
1025 | } |
1026 | |
1027 | static int sis_chip_init(struct sis7019 *sis) |
1028 | { |
1029 | unsigned long io = sis->ioport; |
1030 | void __iomem *ioaddr = sis->ioaddr; |
1031 | unsigned long timeout; |
1032 | u16 status; |
1033 | int count; |
1034 | int i; |
1035 | |
1036 | /* Reset the audio controller |
1037 | */ |
1038 | outl(SIS_GCR_SOFTWARE_RESET, port: io + SIS_GCR); |
1039 | udelay(25); |
1040 | outl(value: 0, port: io + SIS_GCR); |
1041 | |
1042 | /* Get the AC-link semaphore, and reset the codecs |
1043 | */ |
1044 | count = 0xffff; |
1045 | while ((inw(port: io + SIS_AC97_SEMA) & SIS_AC97_SEMA_BUSY) && --count) |
1046 | udelay(1); |
1047 | |
1048 | if (!count) |
1049 | return -EIO; |
1050 | |
1051 | outl(SIS_AC97_CMD_CODEC_COLD_RESET, port: io + SIS_AC97_CMD); |
1052 | udelay(250); |
1053 | |
1054 | count = 0xffff; |
1055 | while ((inw(port: io + SIS_AC97_STATUS) & SIS_AC97_STATUS_BUSY) && --count) |
1056 | udelay(1); |
1057 | |
1058 | /* Command complete, we can let go of the semaphore now. |
1059 | */ |
1060 | outl(SIS_AC97_SEMA_RELEASE, port: io + SIS_AC97_SEMA); |
1061 | if (!count) |
1062 | return -EIO; |
1063 | |
1064 | /* Now that we've finished the reset, find out what's attached. |
1065 | * There are some codec/board combinations that take an extremely |
1066 | * long time to come up. 350+ ms has been observed in the field, |
1067 | * so we'll give them up to 500ms. |
1068 | */ |
1069 | sis->codecs_present = 0; |
1070 | timeout = msecs_to_jiffies(m: 500) + jiffies; |
1071 | while (time_before_eq(jiffies, timeout)) { |
1072 | status = inl(port: io + SIS_AC97_STATUS); |
1073 | if (status & SIS_AC97_STATUS_CODEC_READY) |
1074 | sis->codecs_present |= SIS_PRIMARY_CODEC_PRESENT; |
1075 | if (status & SIS_AC97_STATUS_CODEC2_READY) |
1076 | sis->codecs_present |= SIS_SECONDARY_CODEC_PRESENT; |
1077 | if (status & SIS_AC97_STATUS_CODEC3_READY) |
1078 | sis->codecs_present |= SIS_TERTIARY_CODEC_PRESENT; |
1079 | |
1080 | if (sis->codecs_present == codecs) |
1081 | break; |
1082 | |
1083 | msleep(msecs: 1); |
1084 | } |
1085 | |
1086 | /* All done, check for errors. |
1087 | */ |
1088 | if (!sis->codecs_present) { |
1089 | dev_err(&sis->pci->dev, "could not find any codecs\n" ); |
1090 | return -EIO; |
1091 | } |
1092 | |
1093 | if (sis->codecs_present != codecs) { |
1094 | dev_warn(&sis->pci->dev, "missing codecs, found %0x, expected %0x\n" , |
1095 | sis->codecs_present, codecs); |
1096 | } |
1097 | |
1098 | /* Let the hardware know that the audio driver is alive, |
1099 | * and enable PCM slots on the AC-link for L/R playback (3 & 4) and |
1100 | * record channels. We're going to want to use Variable Rate Audio |
1101 | * for recording, to avoid needlessly resampling from 48kHZ. |
1102 | */ |
1103 | outl(SIS_AC97_CONF_AUDIO_ALIVE, port: io + SIS_AC97_CONF); |
1104 | outl(SIS_AC97_CONF_AUDIO_ALIVE | SIS_AC97_CONF_PCM_LR_ENABLE | |
1105 | SIS_AC97_CONF_PCM_CAP_MIC_ENABLE | |
1106 | SIS_AC97_CONF_PCM_CAP_LR_ENABLE | |
1107 | SIS_AC97_CONF_CODEC_VRA_ENABLE, port: io + SIS_AC97_CONF); |
1108 | |
1109 | /* All AC97 PCM slots should be sourced from sub-mixer 0. |
1110 | */ |
1111 | outl(value: 0, port: io + SIS_AC97_PSR); |
1112 | |
1113 | /* There is only one valid DMA setup for a PCI environment. |
1114 | */ |
1115 | outl(SIS_DMA_CSR_PCI_SETTINGS, port: io + SIS_DMA_CSR); |
1116 | |
1117 | /* Reset the synchronization groups for all of the channels |
1118 | * to be asynchronous. If we start doing SPDIF or 5.1 sound, etc. |
1119 | * we'll need to change how we handle these. Until then, we just |
1120 | * assign sub-mixer 0 to all playback channels, and avoid any |
1121 | * attenuation on the audio. |
1122 | */ |
1123 | outl(value: 0, port: io + SIS_PLAY_SYNC_GROUP_A); |
1124 | outl(value: 0, port: io + SIS_PLAY_SYNC_GROUP_B); |
1125 | outl(value: 0, port: io + SIS_PLAY_SYNC_GROUP_C); |
1126 | outl(value: 0, port: io + SIS_PLAY_SYNC_GROUP_D); |
1127 | outl(value: 0, port: io + SIS_MIXER_SYNC_GROUP); |
1128 | |
1129 | for (i = 0; i < 64; i++) { |
1130 | writel(val: i, SIS_MIXER_START_ADDR(ioaddr, i)); |
1131 | writel(SIS_MIXER_RIGHT_NO_ATTEN | SIS_MIXER_LEFT_NO_ATTEN | |
1132 | SIS_MIXER_DEST_0, SIS_MIXER_ADDR(ioaddr, i)); |
1133 | } |
1134 | |
1135 | /* Don't attenuate any audio set for the wave amplifier. |
1136 | * |
1137 | * FIXME: Maximum attenuation is set for the music amp, which will |
1138 | * need to change if we start using the synth engine. |
1139 | */ |
1140 | outl(value: 0xffff0000, port: io + SIS_WEVCR); |
1141 | |
1142 | /* Ensure that the wave engine is in normal operating mode. |
1143 | */ |
1144 | outl(value: 0, port: io + SIS_WECCR); |
1145 | |
1146 | /* Go ahead and enable the DMA interrupts. They won't go live |
1147 | * until we start a channel. |
1148 | */ |
1149 | outl(SIS_GIER_AUDIO_PLAY_DMA_IRQ_ENABLE | |
1150 | SIS_GIER_AUDIO_RECORD_DMA_IRQ_ENABLE, port: io + SIS_GIER); |
1151 | |
1152 | return 0; |
1153 | } |
1154 | |
1155 | #ifdef CONFIG_PM_SLEEP |
1156 | static int sis_suspend(struct device *dev) |
1157 | { |
1158 | struct snd_card *card = dev_get_drvdata(dev); |
1159 | struct sis7019 *sis = card->private_data; |
1160 | void __iomem *ioaddr = sis->ioaddr; |
1161 | int i; |
1162 | |
1163 | snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
1164 | if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
1165 | snd_ac97_suspend(ac97: sis->ac97[0]); |
1166 | if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) |
1167 | snd_ac97_suspend(ac97: sis->ac97[1]); |
1168 | if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) |
1169 | snd_ac97_suspend(ac97: sis->ac97[2]); |
1170 | |
1171 | /* snd_pcm_suspend_all() stopped all channels, so we're quiescent. |
1172 | */ |
1173 | if (sis->irq >= 0) { |
1174 | free_irq(sis->irq, sis); |
1175 | sis->irq = -1; |
1176 | } |
1177 | |
1178 | /* Save the internal state away |
1179 | */ |
1180 | for (i = 0; i < 4; i++) { |
1181 | memcpy_fromio(sis->suspend_state[i], ioaddr, 4096); |
1182 | ioaddr += 4096; |
1183 | } |
1184 | |
1185 | return 0; |
1186 | } |
1187 | |
1188 | static int sis_resume(struct device *dev) |
1189 | { |
1190 | struct pci_dev *pci = to_pci_dev(dev); |
1191 | struct snd_card *card = dev_get_drvdata(dev); |
1192 | struct sis7019 *sis = card->private_data; |
1193 | void __iomem *ioaddr = sis->ioaddr; |
1194 | int i; |
1195 | |
1196 | if (sis_chip_init(sis)) { |
1197 | dev_err(&pci->dev, "unable to re-init controller\n" ); |
1198 | goto error; |
1199 | } |
1200 | |
1201 | if (request_irq(irq: pci->irq, handler: sis_interrupt, IRQF_SHARED, |
1202 | KBUILD_MODNAME, dev: sis)) { |
1203 | dev_err(&pci->dev, "unable to regain IRQ %d\n" , pci->irq); |
1204 | goto error; |
1205 | } |
1206 | |
1207 | /* Restore saved state, then clear out the page we use for the |
1208 | * silence buffer. |
1209 | */ |
1210 | for (i = 0; i < 4; i++) { |
1211 | memcpy_toio(ioaddr, sis->suspend_state[i], 4096); |
1212 | ioaddr += 4096; |
1213 | } |
1214 | |
1215 | memset(sis->suspend_state[0], 0, 4096); |
1216 | |
1217 | sis->irq = pci->irq; |
1218 | |
1219 | if (sis->codecs_present & SIS_PRIMARY_CODEC_PRESENT) |
1220 | snd_ac97_resume(ac97: sis->ac97[0]); |
1221 | if (sis->codecs_present & SIS_SECONDARY_CODEC_PRESENT) |
1222 | snd_ac97_resume(ac97: sis->ac97[1]); |
1223 | if (sis->codecs_present & SIS_TERTIARY_CODEC_PRESENT) |
1224 | snd_ac97_resume(ac97: sis->ac97[2]); |
1225 | |
1226 | snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
1227 | return 0; |
1228 | |
1229 | error: |
1230 | snd_card_disconnect(card); |
1231 | return -EIO; |
1232 | } |
1233 | |
1234 | static SIMPLE_DEV_PM_OPS(sis_pm, sis_suspend, sis_resume); |
1235 | #define SIS_PM_OPS &sis_pm |
1236 | #else |
1237 | #define SIS_PM_OPS NULL |
1238 | #endif /* CONFIG_PM_SLEEP */ |
1239 | |
1240 | static int sis_alloc_suspend(struct sis7019 *sis) |
1241 | { |
1242 | int i; |
1243 | |
1244 | /* We need 16K to store the internal wave engine state during a |
1245 | * suspend, but we don't need it to be contiguous, so play nice |
1246 | * with the memory system. We'll also use this area for a silence |
1247 | * buffer. |
1248 | */ |
1249 | for (i = 0; i < SIS_SUSPEND_PAGES; i++) { |
1250 | sis->suspend_state[i] = devm_kmalloc(dev: &sis->pci->dev, size: 4096, |
1251 | GFP_KERNEL); |
1252 | if (!sis->suspend_state[i]) |
1253 | return -ENOMEM; |
1254 | } |
1255 | memset(sis->suspend_state[0], 0, 4096); |
1256 | |
1257 | return 0; |
1258 | } |
1259 | |
1260 | static int sis_chip_create(struct snd_card *card, |
1261 | struct pci_dev *pci) |
1262 | { |
1263 | struct sis7019 *sis = card->private_data; |
1264 | struct voice *voice; |
1265 | int rc; |
1266 | int i; |
1267 | |
1268 | rc = pcim_enable_device(pdev: pci); |
1269 | if (rc) |
1270 | return rc; |
1271 | |
1272 | rc = dma_set_mask(dev: &pci->dev, DMA_BIT_MASK(30)); |
1273 | if (rc < 0) { |
1274 | dev_err(&pci->dev, "architecture does not support 30-bit PCI busmaster DMA" ); |
1275 | return -ENXIO; |
1276 | } |
1277 | |
1278 | mutex_init(&sis->ac97_mutex); |
1279 | spin_lock_init(&sis->voice_lock); |
1280 | sis->card = card; |
1281 | sis->pci = pci; |
1282 | sis->irq = -1; |
1283 | sis->ioport = pci_resource_start(pci, 0); |
1284 | |
1285 | rc = pci_request_regions(pci, "SiS7019" ); |
1286 | if (rc) { |
1287 | dev_err(&pci->dev, "unable request regions\n" ); |
1288 | return rc; |
1289 | } |
1290 | |
1291 | sis->ioaddr = devm_ioremap(dev: &pci->dev, pci_resource_start(pci, 1), size: 0x4000); |
1292 | if (!sis->ioaddr) { |
1293 | dev_err(&pci->dev, "unable to remap MMIO, aborting\n" ); |
1294 | return -EIO; |
1295 | } |
1296 | |
1297 | rc = sis_alloc_suspend(sis); |
1298 | if (rc < 0) { |
1299 | dev_err(&pci->dev, "unable to allocate state storage\n" ); |
1300 | return rc; |
1301 | } |
1302 | |
1303 | rc = sis_chip_init(sis); |
1304 | if (rc) |
1305 | return rc; |
1306 | card->private_free = sis_chip_free; |
1307 | |
1308 | rc = request_irq(irq: pci->irq, handler: sis_interrupt, IRQF_SHARED, KBUILD_MODNAME, |
1309 | dev: sis); |
1310 | if (rc) { |
1311 | dev_err(&pci->dev, "unable to allocate irq %d\n" , sis->irq); |
1312 | return rc; |
1313 | } |
1314 | |
1315 | sis->irq = pci->irq; |
1316 | card->sync_irq = sis->irq; |
1317 | pci_set_master(dev: pci); |
1318 | |
1319 | for (i = 0; i < 64; i++) { |
1320 | voice = &sis->voices[i]; |
1321 | voice->num = i; |
1322 | voice->ctrl_base = SIS_PLAY_DMA_ADDR(sis->ioaddr, i); |
1323 | voice->wave_base = SIS_WAVE_ADDR(sis->ioaddr, i); |
1324 | } |
1325 | |
1326 | voice = &sis->capture_voice; |
1327 | voice->flags = VOICE_CAPTURE; |
1328 | voice->num = SIS_CAPTURE_CHAN_AC97_PCM_IN; |
1329 | voice->ctrl_base = SIS_CAPTURE_DMA_ADDR(sis->ioaddr, voice->num); |
1330 | |
1331 | return 0; |
1332 | } |
1333 | |
1334 | static int __snd_sis7019_probe(struct pci_dev *pci, |
1335 | const struct pci_device_id *pci_id) |
1336 | { |
1337 | struct snd_card *card; |
1338 | struct sis7019 *sis; |
1339 | int rc; |
1340 | |
1341 | if (!enable) |
1342 | return -ENOENT; |
1343 | |
1344 | /* The user can specify which codecs should be present so that we |
1345 | * can wait for them to show up if they are slow to recover from |
1346 | * the AC97 cold reset. We default to a single codec, the primary. |
1347 | * |
1348 | * We assume that SIS_PRIMARY_*_PRESENT matches bits 0-2. |
1349 | */ |
1350 | codecs &= SIS_PRIMARY_CODEC_PRESENT | SIS_SECONDARY_CODEC_PRESENT | |
1351 | SIS_TERTIARY_CODEC_PRESENT; |
1352 | if (!codecs) |
1353 | codecs = SIS_PRIMARY_CODEC_PRESENT; |
1354 | |
1355 | rc = snd_devm_card_new(parent: &pci->dev, idx: index, xid: id, THIS_MODULE, |
1356 | extra_size: sizeof(*sis), card_ret: &card); |
1357 | if (rc < 0) |
1358 | return rc; |
1359 | |
1360 | strcpy(p: card->driver, q: "SiS7019" ); |
1361 | strcpy(p: card->shortname, q: "SiS7019" ); |
1362 | rc = sis_chip_create(card, pci); |
1363 | if (rc) |
1364 | return rc; |
1365 | |
1366 | sis = card->private_data; |
1367 | |
1368 | rc = sis_mixer_create(sis); |
1369 | if (rc) |
1370 | return rc; |
1371 | |
1372 | rc = sis_pcm_create(sis); |
1373 | if (rc) |
1374 | return rc; |
1375 | |
1376 | snprintf(buf: card->longname, size: sizeof(card->longname), |
1377 | fmt: "%s Audio Accelerator with %s at 0x%lx, irq %d" , |
1378 | card->shortname, snd_ac97_get_short_name(ac97: sis->ac97[0]), |
1379 | sis->ioport, sis->irq); |
1380 | |
1381 | rc = snd_card_register(card); |
1382 | if (rc) |
1383 | return rc; |
1384 | |
1385 | pci_set_drvdata(pdev: pci, data: card); |
1386 | return 0; |
1387 | } |
1388 | |
1389 | static int snd_sis7019_probe(struct pci_dev *pci, |
1390 | const struct pci_device_id *pci_id) |
1391 | { |
1392 | return snd_card_free_on_error(dev: &pci->dev, ret: __snd_sis7019_probe(pci, pci_id)); |
1393 | } |
1394 | |
1395 | static struct pci_driver sis7019_driver = { |
1396 | .name = KBUILD_MODNAME, |
1397 | .id_table = snd_sis7019_ids, |
1398 | .probe = snd_sis7019_probe, |
1399 | .driver = { |
1400 | .pm = SIS_PM_OPS, |
1401 | }, |
1402 | }; |
1403 | |
1404 | module_pci_driver(sis7019_driver); |
1405 | |