81 struct voice {  struct
95 	struct voice *timing;  argument
133 	struct voice voices[64];
134 	struct voice capture_voice;
204 static void sis_update_sso(struct voice *voice, u16 period)  in sis_update_sso()  argument
206 	void __iomem *base = voice->ctrl_base;  in sis_update_sso()
208 	voice->sso += period;  in sis_update_sso()
209 	if (voice->sso >= voice->buffer_size)  in sis_update_sso()
210 		voice->sso -= voice->buffer_size;  in sis_update_sso()
213 	if (voice->sso < 8)  in sis_update_sso()
214 		voice->sso = 8;  in sis_update_sso()
217 	writew(voice->sso & 0xffff, base + SIS_PLAY_DMA_SSO_ESO + 2);  in sis_update_sso()
220 static void sis_update_voice(struct voice *voice)  in sis_update_voice()  argument
222 	if (voice->flags & VOICE_SSO_TIMING) {  in sis_update_voice()
223 		sis_update_sso(voice, voice->period_size);  in sis_update_voice()
224 	} else if (voice->flags & VOICE_SYNC_TIMING) {  in sis_update_voice()
230 		if (voice->vperiod > voice->period_size) {  in sis_update_voice()
231 			voice->vperiod -= voice->period_size;  in sis_update_voice()
232 			if (voice->vperiod < voice->period_size)  in sis_update_voice()
233 				sis_update_sso(voice, voice->vperiod);  in sis_update_voice()
235 				sis_update_sso(voice, voice->period_size);  in sis_update_voice()
244 		sync = voice->sync_cso;  in sis_update_voice()
245 		sync -= readw(voice->sync_base + SIS_CAPTURE_DMA_FORMAT_CSO);  in sis_update_voice()
246 		if (sync > (voice->sync_buffer_size / 2))  in sis_update_voice()
247 			sync -= voice->sync_buffer_size;  in sis_update_voice()
257 			sis_update_sso(voice, sync);  in sis_update_voice()
277 			voice->vperiod = voice->sync_period_size + 1;  in sis_update_voice()
279 			voice->vperiod = voice->sync_period_size + sync + 10;  in sis_update_voice()
281 		if (voice->vperiod < voice->buffer_size) {  in sis_update_voice()
282 			sis_update_sso(voice, voice->vperiod);  in sis_update_voice()
283 			voice->vperiod = 0;  in sis_update_voice()
285 			sis_update_sso(voice, voice->period_size);  in sis_update_voice()
287 		sync = voice->sync_cso + voice->sync_period_size;  in sis_update_voice()
288 		if (sync >= voice->sync_buffer_size)  in sis_update_voice()
289 			sync -= voice->sync_buffer_size;  in sis_update_voice()
290 		voice->sync_cso = sync;  in sis_update_voice()
293 	snd_pcm_period_elapsed(voice->substream);  in sis_update_voice()
296 static void sis_voice_irq(u32 status, struct voice *voice)  in sis_voice_irq()  argument
303 		voice += bit;  in sis_voice_irq()
304 		sis_update_voice(voice);  in sis_voice_irq()
305 		voice++;  in sis_voice_irq()
313 	struct voice *voice;  in sis_interrupt()  local
343 			voice = &sis->capture_voice;  in sis_interrupt()
344 			if (!voice->timing)  in sis_interrupt()
345 				snd_pcm_period_elapsed(voice->substream);  in sis_interrupt()
401 static void sis_free_voice(struct sis7019 *sis, struct voice *voice)  in sis_free_voice()  argument
406 	if (voice->timing) {  in sis_free_voice()
408 		voice->timing->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING |  in sis_free_voice()
410 		voice->timing = NULL;  in sis_free_voice()
412 	voice->flags &= ~(VOICE_IN_USE | VOICE_SSO_TIMING | VOICE_SYNC_TIMING);  in sis_free_voice()
416 static struct voice *__sis_alloc_playback_voice(struct sis7019 *sis)  in __sis_alloc_playback_voice()
419 	struct voice *voice;  in __sis_alloc_playback_voice()  local
423 		voice = &sis->voices[i];  in __sis_alloc_playback_voice()
424 		if (voice->flags & VOICE_IN_USE)  in __sis_alloc_playback_voice()
426 		voice->flags |= VOICE_IN_USE;  in __sis_alloc_playback_voice()
429 	voice = NULL;  in __sis_alloc_playback_voice()
432 	return voice;  in __sis_alloc_playback_voice()
435 static struct voice *sis_alloc_playback_voice(struct sis7019 *sis)  in sis_alloc_playback_voice()
437 	struct voice *voice;  in sis_alloc_playback_voice()  local
441 	voice = __sis_alloc_playback_voice(sis);  in sis_alloc_playback_voice()
444 	return voice;  in sis_alloc_playback_voice()
452 	struct voice *voice = runtime->private_data;  in sis_alloc_timing_voice()  local
466 	if (needed && !voice->timing) {  in sis_alloc_timing_voice()
468 		voice->timing = __sis_alloc_playback_voice(sis);  in sis_alloc_timing_voice()
469 		if (voice->timing)  in sis_alloc_timing_voice()
472 		if (!voice->timing)  in sis_alloc_timing_voice()
474 		voice->timing->substream = substream;  in sis_alloc_timing_voice()
475 	} else if (!needed && voice->timing) {  in sis_alloc_timing_voice()
476 		sis_free_voice(sis, voice);  in sis_alloc_timing_voice()
477 		voice->timing = NULL;  in sis_alloc_timing_voice()
487 	struct voice *voice;  in sis_playback_open()  local
489 	voice = sis_alloc_playback_voice(sis);  in sis_playback_open()
490 	if (!voice)  in sis_playback_open()
493 	voice->substream = substream;  in sis_playback_open()
494 	runtime->private_data = voice;  in sis_playback_open()
508 	struct voice *voice = runtime->private_data;  in sis_substream_close()  local
510 	sis_free_voice(sis, voice);  in sis_substream_close()
529 	struct voice *voice = runtime->private_data;  in sis_pcm_playback_prepare()  local
530 	void __iomem *ctrl_base = voice->ctrl_base;  in sis_pcm_playback_prepare()
531 	void __iomem *wave_base = voice->wave_base;  in sis_pcm_playback_prepare()
557 		voice->flags |= VOICE_SSO_TIMING;  in sis_pcm_playback_prepare()
558 		voice->sso = runtime->period_size - 1;  in sis_pcm_playback_prepare()
559 		voice->period_size = runtime->period_size;  in sis_pcm_playback_prepare()
560 		voice->buffer_size = runtime->buffer_size;  in sis_pcm_playback_prepare()
597 	struct voice *voice;  in sis_pcm_trigger()  local
628 		voice = s->runtime->private_data;  in sis_pcm_trigger()
629 		if (voice->flags & VOICE_CAPTURE) {  in sis_pcm_trigger()
630 			record |= 1 << voice->num;  in sis_pcm_trigger()
631 			voice = voice->timing;  in sis_pcm_trigger()
637 		if (voice)  in sis_pcm_trigger()
638 			play[voice->num / 32] |= 1 << (voice->num & 0x1f);  in sis_pcm_trigger()
664 	struct voice *voice = runtime->private_data;  in sis_pcm_pointer()  local
667 	cso = readl(voice->ctrl_base + SIS_PLAY_DMA_FORMAT_CSO);  in sis_pcm_pointer()
676 	struct voice *voice = &sis->capture_voice;  in sis_capture_open()  local
683 	if (voice->flags & VOICE_IN_USE)  in sis_capture_open()
684 		voice = NULL;  in sis_capture_open()
686 		voice->flags |= VOICE_IN_USE;  in sis_capture_open()
689 	if (!voice)  in sis_capture_open()
692 	voice->substream = substream;  in sis_capture_open()
693 	runtime->private_data = voice;  in sis_capture_open()
727 static void sis_prepare_timing_voice(struct voice *voice,  in sis_prepare_timing_voice()  argument
732 	struct voice *timing = voice->timing;  in sis_prepare_timing_voice()
786 	timing->sync_base = voice->ctrl_base;  in sis_prepare_timing_voice()
833 	struct voice *voice = runtime->private_data;  in sis_pcm_capture_prepare()  local
834 	void __iomem *rec_base = voice->ctrl_base;  in sis_pcm_capture_prepare()
857 	if (voice->timing) {  in sis_pcm_capture_prepare()
858 		sis_prepare_timing_voice(voice, substream);  in sis_pcm_capture_prepare()
1317 	struct voice *voice;  in sis_chip_create()  local
1376 		voice = &sis->voices[i];  in sis_chip_create()
1377 		voice->num = i;  in sis_chip_create()
1378 		voice->ctrl_base = SIS_PLAY_DMA_ADDR(sis->ioaddr, i);  in sis_chip_create()
1379 		voice->wave_base = SIS_WAVE_ADDR(sis->ioaddr, i);  in sis_chip_create()
1382 	voice = &sis->capture_voice;  in sis_chip_create()
1383 	voice->flags = VOICE_CAPTURE;  in sis_chip_create()
1384 	voice->num = SIS_CAPTURE_CHAN_AC97_PCM_IN;  in sis_chip_create()
1385 	voice->ctrl_base = SIS_CAPTURE_DMA_ADDR(sis->ioaddr, voice->num);  in sis_chip_create()