xref: /openbmc/linux/sound/pci/trident/trident_main.c (revision 293d5b43)
1 /*
2  *  Maintained by Jaroslav Kysela <perex@perex.cz>
3  *  Originated by audio@tridentmicro.com
4  *  Fri Feb 19 15:55:28 MST 1999
5  *  Routines for control of Trident 4DWave (DX and NX) chip
6  *
7  *  BUGS:
8  *
9  *  TODO:
10  *    ---
11  *
12  *   This program is free software; you can redistribute it and/or modify
13  *   it under the terms of the GNU General Public License as published by
14  *   the Free Software Foundation; either version 2 of the License, or
15  *   (at your option) any later version.
16  *
17  *   This program is distributed in the hope that it will be useful,
18  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *   GNU General Public License for more details.
21  *
22  *   You should have received a copy of the GNU General Public License
23  *   along with this program; if not, write to the Free Software
24  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
25  *
26  *
27  *  SiS7018 S/PDIF support by Thomas Winischhofer <thomas@winischhofer.net>
28  */
29 
30 #include <linux/delay.h>
31 #include <linux/init.h>
32 #include <linux/interrupt.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
35 #include <linux/vmalloc.h>
36 #include <linux/gameport.h>
37 #include <linux/dma-mapping.h>
38 #include <linux/export.h>
39 #include <linux/io.h>
40 
41 #include <sound/core.h>
42 #include <sound/info.h>
43 #include <sound/control.h>
44 #include <sound/tlv.h>
45 #include "trident.h"
46 #include <sound/asoundef.h>
47 
48 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
49 				       struct snd_trident_voice * voice,
50 				       struct snd_pcm_substream *substream);
51 static int snd_trident_pcm_mixer_free(struct snd_trident *trident,
52 				      struct snd_trident_voice * voice,
53 				      struct snd_pcm_substream *substream);
54 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id);
55 static int snd_trident_sis_reset(struct snd_trident *trident);
56 
57 static void snd_trident_clear_voices(struct snd_trident * trident,
58 				     unsigned short v_min, unsigned short v_max);
59 static int snd_trident_free(struct snd_trident *trident);
60 
61 /*
62  *  common I/O routines
63  */
64 
65 
66 #if 0
67 static void snd_trident_print_voice_regs(struct snd_trident *trident, int voice)
68 {
69 	unsigned int val, tmp;
70 
71 	dev_dbg(trident->card->dev, "Trident voice %i:\n", voice);
72 	outb(voice, TRID_REG(trident, T4D_LFO_GC_CIR));
73 	val = inl(TRID_REG(trident, CH_LBA));
74 	dev_dbg(trident->card->dev, "LBA: 0x%x\n", val);
75 	val = inl(TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
76 	dev_dbg(trident->card->dev, "GVSel: %i\n", val >> 31);
77 	dev_dbg(trident->card->dev, "Pan: 0x%x\n", (val >> 24) & 0x7f);
78 	dev_dbg(trident->card->dev, "Vol: 0x%x\n", (val >> 16) & 0xff);
79 	dev_dbg(trident->card->dev, "CTRL: 0x%x\n", (val >> 12) & 0x0f);
80 	dev_dbg(trident->card->dev, "EC: 0x%x\n", val & 0x0fff);
81 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
82 		val = inl(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS));
83 		dev_dbg(trident->card->dev, "CSO: 0x%x\n", val >> 16);
84 		dev_dbg(trident->card->dev, "Alpha: 0x%x\n", (val >> 4) & 0x0fff);
85 		dev_dbg(trident->card->dev, "FMS: 0x%x\n", val & 0x0f);
86 		val = inl(TRID_REG(trident, CH_DX_ESO_DELTA));
87 		dev_dbg(trident->card->dev, "ESO: 0x%x\n", val >> 16);
88 		dev_dbg(trident->card->dev, "Delta: 0x%x\n", val & 0xffff);
89 		val = inl(TRID_REG(trident, CH_DX_FMC_RVOL_CVOL));
90 	} else {		// TRIDENT_DEVICE_ID_NX
91 		val = inl(TRID_REG(trident, CH_NX_DELTA_CSO));
92 		tmp = (val >> 24) & 0xff;
93 		dev_dbg(trident->card->dev, "CSO: 0x%x\n", val & 0x00ffffff);
94 		val = inl(TRID_REG(trident, CH_NX_DELTA_ESO));
95 		tmp |= (val >> 16) & 0xff00;
96 		dev_dbg(trident->card->dev, "Delta: 0x%x\n", tmp);
97 		dev_dbg(trident->card->dev, "ESO: 0x%x\n", val & 0x00ffffff);
98 		val = inl(TRID_REG(trident, CH_NX_ALPHA_FMS_FMC_RVOL_CVOL));
99 		dev_dbg(trident->card->dev, "Alpha: 0x%x\n", val >> 20);
100 		dev_dbg(trident->card->dev, "FMS: 0x%x\n", (val >> 16) & 0x0f);
101 	}
102 	dev_dbg(trident->card->dev, "FMC: 0x%x\n", (val >> 14) & 3);
103 	dev_dbg(trident->card->dev, "RVol: 0x%x\n", (val >> 7) & 0x7f);
104 	dev_dbg(trident->card->dev, "CVol: 0x%x\n", val & 0x7f);
105 }
106 #endif
107 
108 /*---------------------------------------------------------------------------
109    unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
110 
111    Description: This routine will do all of the reading from the external
112                 CODEC (AC97).
113 
114    Parameters:  ac97 - ac97 codec structure
115                 reg - CODEC register index, from AC97 Hal.
116 
117    returns:     16 bit value read from the AC97.
118 
119   ---------------------------------------------------------------------------*/
120 static unsigned short snd_trident_codec_read(struct snd_ac97 *ac97, unsigned short reg)
121 {
122 	unsigned int data = 0, treg;
123 	unsigned short count = 0xffff;
124 	unsigned long flags;
125 	struct snd_trident *trident = ac97->private_data;
126 
127 	spin_lock_irqsave(&trident->reg_lock, flags);
128 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
129 		data = (DX_AC97_BUSY_READ | (reg & 0x000000ff));
130 		outl(data, TRID_REG(trident, DX_ACR1_AC97_R));
131 		do {
132 			data = inl(TRID_REG(trident, DX_ACR1_AC97_R));
133 			if ((data & DX_AC97_BUSY_READ) == 0)
134 				break;
135 		} while (--count);
136 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
137 		data = (NX_AC97_BUSY_READ | (reg & 0x000000ff));
138 		treg = ac97->num == 0 ? NX_ACR2_AC97_R_PRIMARY : NX_ACR3_AC97_R_SECONDARY;
139 		outl(data, TRID_REG(trident, treg));
140 		do {
141 			data = inl(TRID_REG(trident, treg));
142 			if ((data & 0x00000C00) == 0)
143 				break;
144 		} while (--count);
145 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
146 		data = SI_AC97_BUSY_READ | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
147 		if (ac97->num == 1)
148 			data |= SI_AC97_SECONDARY;
149 		outl(data, TRID_REG(trident, SI_AC97_READ));
150 		do {
151 			data = inl(TRID_REG(trident, SI_AC97_READ));
152 			if ((data & (SI_AC97_BUSY_READ)) == 0)
153 				break;
154 		} while (--count);
155 	}
156 
157 	if (count == 0 && !trident->ac97_detect) {
158 		dev_err(trident->card->dev,
159 			"ac97 codec read TIMEOUT [0x%x/0x%x]!!!\n",
160 			   reg, data);
161 		data = 0;
162 	}
163 
164 	spin_unlock_irqrestore(&trident->reg_lock, flags);
165 	return ((unsigned short) (data >> 16));
166 }
167 
168 /*---------------------------------------------------------------------------
169    void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
170    unsigned short wdata)
171 
172    Description: This routine will do all of the writing to the external
173                 CODEC (AC97).
174 
175    Parameters:	ac97 - ac97 codec structure
176    	        reg - CODEC register index, from AC97 Hal.
177                 data  - Lower 16 bits are the data to write to CODEC.
178 
179    returns:     TRUE if everything went ok, else FALSE.
180 
181   ---------------------------------------------------------------------------*/
182 static void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
183 				    unsigned short wdata)
184 {
185 	unsigned int address, data;
186 	unsigned short count = 0xffff;
187 	unsigned long flags;
188 	struct snd_trident *trident = ac97->private_data;
189 
190 	data = ((unsigned long) wdata) << 16;
191 
192 	spin_lock_irqsave(&trident->reg_lock, flags);
193 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
194 		address = DX_ACR0_AC97_W;
195 
196 		/* read AC-97 write register status */
197 		do {
198 			if ((inw(TRID_REG(trident, address)) & DX_AC97_BUSY_WRITE) == 0)
199 				break;
200 		} while (--count);
201 
202 		data |= (DX_AC97_BUSY_WRITE | (reg & 0x000000ff));
203 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
204 		address = NX_ACR1_AC97_W;
205 
206 		/* read AC-97 write register status */
207 		do {
208 			if ((inw(TRID_REG(trident, address)) & NX_AC97_BUSY_WRITE) == 0)
209 				break;
210 		} while (--count);
211 
212 		data |= (NX_AC97_BUSY_WRITE | (ac97->num << 8) | (reg & 0x000000ff));
213 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
214 		address = SI_AC97_WRITE;
215 
216 		/* read AC-97 write register status */
217 		do {
218 			if ((inw(TRID_REG(trident, address)) & (SI_AC97_BUSY_WRITE)) == 0)
219 				break;
220 		} while (--count);
221 
222 		data |= SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
223 		if (ac97->num == 1)
224 			data |= SI_AC97_SECONDARY;
225 	} else {
226 		address = 0;	/* keep GCC happy */
227 		count = 0;	/* return */
228 	}
229 
230 	if (count == 0) {
231 		spin_unlock_irqrestore(&trident->reg_lock, flags);
232 		return;
233 	}
234 	outl(data, TRID_REG(trident, address));
235 	spin_unlock_irqrestore(&trident->reg_lock, flags);
236 }
237 
238 /*---------------------------------------------------------------------------
239    void snd_trident_enable_eso(struct snd_trident *trident)
240 
241    Description: This routine will enable end of loop interrupts.
242                 End of loop interrupts will occur when a running
243                 channel reaches ESO.
244                 Also enables middle of loop interrupts.
245 
246    Parameters:  trident - pointer to target device class for 4DWave.
247 
248   ---------------------------------------------------------------------------*/
249 
250 static void snd_trident_enable_eso(struct snd_trident * trident)
251 {
252 	unsigned int val;
253 
254 	val = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
255 	val |= ENDLP_IE;
256 	val |= MIDLP_IE;
257 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
258 		val |= BANK_B_EN;
259 	outl(val, TRID_REG(trident, T4D_LFO_GC_CIR));
260 }
261 
262 /*---------------------------------------------------------------------------
263    void snd_trident_disable_eso(struct snd_trident *trident)
264 
265    Description: This routine will disable end of loop interrupts.
266                 End of loop interrupts will occur when a running
267                 channel reaches ESO.
268                 Also disables middle of loop interrupts.
269 
270    Parameters:
271                 trident - pointer to target device class for 4DWave.
272 
273    returns:     TRUE if everything went ok, else FALSE.
274 
275   ---------------------------------------------------------------------------*/
276 
277 static void snd_trident_disable_eso(struct snd_trident * trident)
278 {
279 	unsigned int tmp;
280 
281 	tmp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
282 	tmp &= ~ENDLP_IE;
283 	tmp &= ~MIDLP_IE;
284 	outl(tmp, TRID_REG(trident, T4D_LFO_GC_CIR));
285 }
286 
287 /*---------------------------------------------------------------------------
288    void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
289 
290     Description: Start a voice, any channel 0 thru 63.
291                  This routine automatically handles the fact that there are
292                  more than 32 channels available.
293 
294     Parameters : voice - Voice number 0 thru n.
295                  trident - pointer to target device class for 4DWave.
296 
297     Return Value: None.
298 
299   ---------------------------------------------------------------------------*/
300 
301 void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
302 {
303 	unsigned int mask = 1 << (voice & 0x1f);
304 	unsigned int reg = (voice & 0x20) ? T4D_START_B : T4D_START_A;
305 
306 	outl(mask, TRID_REG(trident, reg));
307 }
308 
309 EXPORT_SYMBOL(snd_trident_start_voice);
310 
311 /*---------------------------------------------------------------------------
312    void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
313 
314     Description: Stop a voice, any channel 0 thru 63.
315                  This routine automatically handles the fact that there are
316                  more than 32 channels available.
317 
318     Parameters : voice - Voice number 0 thru n.
319                  trident - pointer to target device class for 4DWave.
320 
321     Return Value: None.
322 
323   ---------------------------------------------------------------------------*/
324 
325 void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
326 {
327 	unsigned int mask = 1 << (voice & 0x1f);
328 	unsigned int reg = (voice & 0x20) ? T4D_STOP_B : T4D_STOP_A;
329 
330 	outl(mask, TRID_REG(trident, reg));
331 }
332 
333 EXPORT_SYMBOL(snd_trident_stop_voice);
334 
335 /*---------------------------------------------------------------------------
336     int snd_trident_allocate_pcm_channel(struct snd_trident *trident)
337 
338     Description: Allocate hardware channel in Bank B (32-63).
339 
340     Parameters :  trident - pointer to target device class for 4DWave.
341 
342     Return Value: hardware channel - 32-63 or -1 when no channel is available
343 
344   ---------------------------------------------------------------------------*/
345 
346 static int snd_trident_allocate_pcm_channel(struct snd_trident * trident)
347 {
348 	int idx;
349 
350 	if (trident->ChanPCMcnt >= trident->ChanPCM)
351 		return -1;
352 	for (idx = 31; idx >= 0; idx--) {
353 		if (!(trident->ChanMap[T4D_BANK_B] & (1 << idx))) {
354 			trident->ChanMap[T4D_BANK_B] |= 1 << idx;
355 			trident->ChanPCMcnt++;
356 			return idx + 32;
357 		}
358 	}
359 	return -1;
360 }
361 
362 /*---------------------------------------------------------------------------
363     void snd_trident_free_pcm_channel(int channel)
364 
365     Description: Free hardware channel in Bank B (32-63)
366 
367     Parameters :  trident - pointer to target device class for 4DWave.
368 	          channel - hardware channel number 0-63
369 
370     Return Value: none
371 
372   ---------------------------------------------------------------------------*/
373 
374 static void snd_trident_free_pcm_channel(struct snd_trident *trident, int channel)
375 {
376 	if (channel < 32 || channel > 63)
377 		return;
378 	channel &= 0x1f;
379 	if (trident->ChanMap[T4D_BANK_B] & (1 << channel)) {
380 		trident->ChanMap[T4D_BANK_B] &= ~(1 << channel);
381 		trident->ChanPCMcnt--;
382 	}
383 }
384 
385 /*---------------------------------------------------------------------------
386     unsigned int snd_trident_allocate_synth_channel(void)
387 
388     Description: Allocate hardware channel in Bank A (0-31).
389 
390     Parameters :  trident - pointer to target device class for 4DWave.
391 
392     Return Value: hardware channel - 0-31 or -1 when no channel is available
393 
394   ---------------------------------------------------------------------------*/
395 
396 static int snd_trident_allocate_synth_channel(struct snd_trident * trident)
397 {
398 	int idx;
399 
400 	for (idx = 31; idx >= 0; idx--) {
401 		if (!(trident->ChanMap[T4D_BANK_A] & (1 << idx))) {
402 			trident->ChanMap[T4D_BANK_A] |= 1 << idx;
403 			trident->synth.ChanSynthCount++;
404 			return idx;
405 		}
406 	}
407 	return -1;
408 }
409 
410 /*---------------------------------------------------------------------------
411     void snd_trident_free_synth_channel( int channel )
412 
413     Description: Free hardware channel in Bank B (0-31).
414 
415     Parameters :  trident - pointer to target device class for 4DWave.
416 	          channel - hardware channel number 0-63
417 
418     Return Value: none
419 
420   ---------------------------------------------------------------------------*/
421 
422 static void snd_trident_free_synth_channel(struct snd_trident *trident, int channel)
423 {
424 	if (channel < 0 || channel > 31)
425 		return;
426 	channel &= 0x1f;
427 	if (trident->ChanMap[T4D_BANK_A] & (1 << channel)) {
428 		trident->ChanMap[T4D_BANK_A] &= ~(1 << channel);
429 		trident->synth.ChanSynthCount--;
430 	}
431 }
432 
433 /*---------------------------------------------------------------------------
434    snd_trident_write_voice_regs
435 
436    Description: This routine will complete and write the 5 hardware channel
437                 registers to hardware.
438 
439    Parameters:  trident - pointer to target device class for 4DWave.
440                 voice - synthesizer voice structure
441                 Each register field.
442 
443   ---------------------------------------------------------------------------*/
444 
445 void snd_trident_write_voice_regs(struct snd_trident * trident,
446 				  struct snd_trident_voice * voice)
447 {
448 	unsigned int FmcRvolCvol;
449 	unsigned int regs[5];
450 
451 	regs[1] = voice->LBA;
452 	regs[4] = (voice->GVSel << 31) |
453 		  ((voice->Pan & 0x0000007f) << 24) |
454 		  ((voice->CTRL & 0x0000000f) << 12);
455 	FmcRvolCvol = ((voice->FMC & 3) << 14) |
456 	              ((voice->RVol & 0x7f) << 7) |
457 	              (voice->CVol & 0x7f);
458 
459 	switch (trident->device) {
460 	case TRIDENT_DEVICE_ID_SI7018:
461 		regs[4] |= voice->number > 31 ?
462 				(voice->Vol & 0x000003ff) :
463 				((voice->Vol & 0x00003fc) << (16-2)) |
464 				(voice->EC & 0x00000fff);
465 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
466 			(voice->FMS & 0x0000000f);
467 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
468 		regs[3] = (voice->Attribute << 16) | FmcRvolCvol;
469 		break;
470 	case TRIDENT_DEVICE_ID_DX:
471 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
472 			   (voice->EC & 0x00000fff);
473 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
474 			(voice->FMS & 0x0000000f);
475 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
476 		regs[3] = FmcRvolCvol;
477 		break;
478 	case TRIDENT_DEVICE_ID_NX:
479 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
480 			   (voice->EC & 0x00000fff);
481 		regs[0] = (voice->Delta << 24) | (voice->CSO & 0x00ffffff);
482 		regs[2] = ((voice->Delta << 16) & 0xff000000) |
483 			(voice->ESO & 0x00ffffff);
484 		regs[3] = (voice->Alpha << 20) |
485 			((voice->FMS & 0x0000000f) << 16) | FmcRvolCvol;
486 		break;
487 	default:
488 		snd_BUG();
489 		return;
490 	}
491 
492 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
493 	outl(regs[0], TRID_REG(trident, CH_START + 0));
494 	outl(regs[1], TRID_REG(trident, CH_START + 4));
495 	outl(regs[2], TRID_REG(trident, CH_START + 8));
496 	outl(regs[3], TRID_REG(trident, CH_START + 12));
497 	outl(regs[4], TRID_REG(trident, CH_START + 16));
498 
499 #if 0
500 	dev_dbg(trident->card->dev, "written %i channel:\n", voice->number);
501 	dev_dbg(trident->card->dev, "  regs[0] = 0x%x/0x%x\n",
502 	       regs[0], inl(TRID_REG(trident, CH_START + 0)));
503 	dev_dbg(trident->card->dev, "  regs[1] = 0x%x/0x%x\n",
504 	       regs[1], inl(TRID_REG(trident, CH_START + 4)));
505 	dev_dbg(trident->card->dev, "  regs[2] = 0x%x/0x%x\n",
506 	       regs[2], inl(TRID_REG(trident, CH_START + 8)));
507 	dev_dbg(trident->card->dev, "  regs[3] = 0x%x/0x%x\n",
508 	       regs[3], inl(TRID_REG(trident, CH_START + 12)));
509 	dev_dbg(trident->card->dev, "  regs[4] = 0x%x/0x%x\n",
510 	       regs[4], inl(TRID_REG(trident, CH_START + 16)));
511 #endif
512 }
513 
514 EXPORT_SYMBOL(snd_trident_write_voice_regs);
515 
516 /*---------------------------------------------------------------------------
517    snd_trident_write_cso_reg
518 
519    Description: This routine will write the new CSO offset
520                 register to hardware.
521 
522    Parameters:  trident - pointer to target device class for 4DWave.
523                 voice - synthesizer voice structure
524                 CSO - new CSO value
525 
526   ---------------------------------------------------------------------------*/
527 
528 static void snd_trident_write_cso_reg(struct snd_trident * trident,
529 				      struct snd_trident_voice * voice,
530 				      unsigned int CSO)
531 {
532 	voice->CSO = CSO;
533 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
534 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
535 		outw(voice->CSO, TRID_REG(trident, CH_DX_CSO_ALPHA_FMS) + 2);
536 	} else {
537 		outl((voice->Delta << 24) |
538 		     (voice->CSO & 0x00ffffff), TRID_REG(trident, CH_NX_DELTA_CSO));
539 	}
540 }
541 
542 /*---------------------------------------------------------------------------
543    snd_trident_write_eso_reg
544 
545    Description: This routine will write the new ESO offset
546                 register to hardware.
547 
548    Parameters:  trident - pointer to target device class for 4DWave.
549                 voice - synthesizer voice structure
550                 ESO - new ESO value
551 
552   ---------------------------------------------------------------------------*/
553 
554 static void snd_trident_write_eso_reg(struct snd_trident * trident,
555 				      struct snd_trident_voice * voice,
556 				      unsigned int ESO)
557 {
558 	voice->ESO = ESO;
559 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
560 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
561 		outw(voice->ESO, TRID_REG(trident, CH_DX_ESO_DELTA) + 2);
562 	} else {
563 		outl(((voice->Delta << 16) & 0xff000000) | (voice->ESO & 0x00ffffff),
564 		     TRID_REG(trident, CH_NX_DELTA_ESO));
565 	}
566 }
567 
568 /*---------------------------------------------------------------------------
569    snd_trident_write_vol_reg
570 
571    Description: This routine will write the new voice volume
572                 register to hardware.
573 
574    Parameters:  trident - pointer to target device class for 4DWave.
575                 voice - synthesizer voice structure
576                 Vol - new voice volume
577 
578   ---------------------------------------------------------------------------*/
579 
580 static void snd_trident_write_vol_reg(struct snd_trident * trident,
581 				      struct snd_trident_voice * voice,
582 				      unsigned int Vol)
583 {
584 	voice->Vol = Vol;
585 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
586 	switch (trident->device) {
587 	case TRIDENT_DEVICE_ID_DX:
588 	case TRIDENT_DEVICE_ID_NX:
589 		outb(voice->Vol >> 2, TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 2));
590 		break;
591 	case TRIDENT_DEVICE_ID_SI7018:
592 		/* dev_dbg(trident->card->dev, "voice->Vol = 0x%x\n", voice->Vol); */
593 		outw((voice->CTRL << 12) | voice->Vol,
594 		     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
595 		break;
596 	}
597 }
598 
599 /*---------------------------------------------------------------------------
600    snd_trident_write_pan_reg
601 
602    Description: This routine will write the new voice pan
603                 register to hardware.
604 
605    Parameters:  trident - pointer to target device class for 4DWave.
606                 voice - synthesizer voice structure
607                 Pan - new pan value
608 
609   ---------------------------------------------------------------------------*/
610 
611 static void snd_trident_write_pan_reg(struct snd_trident * trident,
612 				      struct snd_trident_voice * voice,
613 				      unsigned int Pan)
614 {
615 	voice->Pan = Pan;
616 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
617 	outb(((voice->GVSel & 0x01) << 7) | (voice->Pan & 0x7f),
618 	     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 3));
619 }
620 
621 /*---------------------------------------------------------------------------
622    snd_trident_write_rvol_reg
623 
624    Description: This routine will write the new reverb volume
625                 register to hardware.
626 
627    Parameters:  trident - pointer to target device class for 4DWave.
628                 voice - synthesizer voice structure
629                 RVol - new reverb volume
630 
631   ---------------------------------------------------------------------------*/
632 
633 static void snd_trident_write_rvol_reg(struct snd_trident * trident,
634 				       struct snd_trident_voice * voice,
635 				       unsigned int RVol)
636 {
637 	voice->RVol = RVol;
638 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
639 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
640 	     (voice->CVol & 0x007f),
641 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
642 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
643 }
644 
645 /*---------------------------------------------------------------------------
646    snd_trident_write_cvol_reg
647 
648    Description: This routine will write the new chorus volume
649                 register to hardware.
650 
651    Parameters:  trident - pointer to target device class for 4DWave.
652                 voice - synthesizer voice structure
653                 CVol - new chorus volume
654 
655   ---------------------------------------------------------------------------*/
656 
657 static void snd_trident_write_cvol_reg(struct snd_trident * trident,
658 				       struct snd_trident_voice * voice,
659 				       unsigned int CVol)
660 {
661 	voice->CVol = CVol;
662 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
663 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
664 	     (voice->CVol & 0x007f),
665 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
666 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
667 }
668 
669 /*---------------------------------------------------------------------------
670    snd_trident_convert_rate
671 
672    Description: This routine converts rate in HZ to hardware delta value.
673 
674    Parameters:  trident - pointer to target device class for 4DWave.
675                 rate - Real or Virtual channel number.
676 
677    Returns:     Delta value.
678 
679   ---------------------------------------------------------------------------*/
680 static unsigned int snd_trident_convert_rate(unsigned int rate)
681 {
682 	unsigned int delta;
683 
684 	// We special case 44100 and 8000 since rounding with the equation
685 	// does not give us an accurate enough value. For 11025 and 22050
686 	// the equation gives us the best answer. All other frequencies will
687 	// also use the equation. JDW
688 	if (rate == 44100)
689 		delta = 0xeb3;
690 	else if (rate == 8000)
691 		delta = 0x2ab;
692 	else if (rate == 48000)
693 		delta = 0x1000;
694 	else
695 		delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff;
696 	return delta;
697 }
698 
699 /*---------------------------------------------------------------------------
700    snd_trident_convert_adc_rate
701 
702    Description: This routine converts rate in HZ to hardware delta value.
703 
704    Parameters:  trident - pointer to target device class for 4DWave.
705                 rate - Real or Virtual channel number.
706 
707    Returns:     Delta value.
708 
709   ---------------------------------------------------------------------------*/
710 static unsigned int snd_trident_convert_adc_rate(unsigned int rate)
711 {
712 	unsigned int delta;
713 
714 	// We special case 44100 and 8000 since rounding with the equation
715 	// does not give us an accurate enough value. For 11025 and 22050
716 	// the equation gives us the best answer. All other frequencies will
717 	// also use the equation. JDW
718 	if (rate == 44100)
719 		delta = 0x116a;
720 	else if (rate == 8000)
721 		delta = 0x6000;
722 	else if (rate == 48000)
723 		delta = 0x1000;
724 	else
725 		delta = ((48000 << 12) / rate) & 0x0000ffff;
726 	return delta;
727 }
728 
729 /*---------------------------------------------------------------------------
730    snd_trident_spurious_threshold
731 
732    Description: This routine converts rate in HZ to spurious threshold.
733 
734    Parameters:  trident - pointer to target device class for 4DWave.
735                 rate - Real or Virtual channel number.
736 
737    Returns:     Delta value.
738 
739   ---------------------------------------------------------------------------*/
740 static unsigned int snd_trident_spurious_threshold(unsigned int rate,
741 						   unsigned int period_size)
742 {
743 	unsigned int res = (rate * period_size) / 48000;
744 	if (res < 64)
745 		res = res / 2;
746 	else
747 		res -= 32;
748 	return res;
749 }
750 
751 /*---------------------------------------------------------------------------
752    snd_trident_control_mode
753 
754    Description: This routine returns a control mode for a PCM channel.
755 
756    Parameters:  trident - pointer to target device class for 4DWave.
757                 substream  - PCM substream
758 
759    Returns:     Control value.
760 
761   ---------------------------------------------------------------------------*/
762 static unsigned int snd_trident_control_mode(struct snd_pcm_substream *substream)
763 {
764 	unsigned int CTRL;
765 	struct snd_pcm_runtime *runtime = substream->runtime;
766 
767 	/* set ctrl mode
768 	   CTRL default: 8-bit (unsigned) mono, loop mode enabled
769 	 */
770 	CTRL = 0x00000001;
771 	if (snd_pcm_format_width(runtime->format) == 16)
772 		CTRL |= 0x00000008;	// 16-bit data
773 	if (snd_pcm_format_signed(runtime->format))
774 		CTRL |= 0x00000002;	// signed data
775 	if (runtime->channels > 1)
776 		CTRL |= 0x00000004;	// stereo data
777 	return CTRL;
778 }
779 
780 /*
781  *  PCM part
782  */
783 
784 /*---------------------------------------------------------------------------
785    snd_trident_ioctl
786 
787    Description: Device I/O control handler for playback/capture parameters.
788 
789    Parameters:   substream  - PCM substream class
790                 cmd     - what ioctl message to process
791                 arg     - additional message infoarg
792 
793    Returns:     Error status
794 
795   ---------------------------------------------------------------------------*/
796 
797 static int snd_trident_ioctl(struct snd_pcm_substream *substream,
798 			     unsigned int cmd,
799 			     void *arg)
800 {
801 	/* FIXME: it seems that with small periods the behaviour of
802 	          trident hardware is unpredictable and interrupt generator
803 	          is broken */
804 	return snd_pcm_lib_ioctl(substream, cmd, arg);
805 }
806 
807 /*---------------------------------------------------------------------------
808    snd_trident_allocate_pcm_mem
809 
810    Description: Allocate PCM ring buffer for given substream
811 
812    Parameters:  substream  - PCM substream class
813 		hw_params  - hardware parameters
814 
815    Returns:     Error status
816 
817   ---------------------------------------------------------------------------*/
818 
819 static int snd_trident_allocate_pcm_mem(struct snd_pcm_substream *substream,
820 					struct snd_pcm_hw_params *hw_params)
821 {
822 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
823 	struct snd_pcm_runtime *runtime = substream->runtime;
824 	struct snd_trident_voice *voice = runtime->private_data;
825 	int err;
826 
827 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
828 		return err;
829 	if (trident->tlb.entries) {
830 		if (err > 0) { /* change */
831 			if (voice->memblk)
832 				snd_trident_free_pages(trident, voice->memblk);
833 			voice->memblk = snd_trident_alloc_pages(trident, substream);
834 			if (voice->memblk == NULL)
835 				return -ENOMEM;
836 		}
837 	}
838 	return 0;
839 }
840 
841 /*---------------------------------------------------------------------------
842    snd_trident_allocate_evoice
843 
844    Description: Allocate extra voice as interrupt generator
845 
846    Parameters:  substream  - PCM substream class
847 		hw_params  - hardware parameters
848 
849    Returns:     Error status
850 
851   ---------------------------------------------------------------------------*/
852 
853 static int snd_trident_allocate_evoice(struct snd_pcm_substream *substream,
854 				       struct snd_pcm_hw_params *hw_params)
855 {
856 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
857 	struct snd_pcm_runtime *runtime = substream->runtime;
858 	struct snd_trident_voice *voice = runtime->private_data;
859 	struct snd_trident_voice *evoice = voice->extra;
860 
861 	/* voice management */
862 
863 	if (params_buffer_size(hw_params) / 2 != params_period_size(hw_params)) {
864 		if (evoice == NULL) {
865 			evoice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
866 			if (evoice == NULL)
867 				return -ENOMEM;
868 			voice->extra = evoice;
869 			evoice->substream = substream;
870 		}
871 	} else {
872 		if (evoice != NULL) {
873 			snd_trident_free_voice(trident, evoice);
874 			voice->extra = evoice = NULL;
875 		}
876 	}
877 
878 	return 0;
879 }
880 
881 /*---------------------------------------------------------------------------
882    snd_trident_hw_params
883 
884    Description: Set the hardware parameters for the playback device.
885 
886    Parameters:  substream  - PCM substream class
887 		hw_params  - hardware parameters
888 
889    Returns:     Error status
890 
891   ---------------------------------------------------------------------------*/
892 
893 static int snd_trident_hw_params(struct snd_pcm_substream *substream,
894 				 struct snd_pcm_hw_params *hw_params)
895 {
896 	int err;
897 
898 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
899 	if (err >= 0)
900 		err = snd_trident_allocate_evoice(substream, hw_params);
901 	return err;
902 }
903 
904 /*---------------------------------------------------------------------------
905    snd_trident_playback_hw_free
906 
907    Description: Release the hardware resources for the playback device.
908 
909    Parameters:  substream  - PCM substream class
910 
911    Returns:     Error status
912 
913   ---------------------------------------------------------------------------*/
914 
915 static int snd_trident_hw_free(struct snd_pcm_substream *substream)
916 {
917 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
918 	struct snd_pcm_runtime *runtime = substream->runtime;
919 	struct snd_trident_voice *voice = runtime->private_data;
920 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
921 
922 	if (trident->tlb.entries) {
923 		if (voice && voice->memblk) {
924 			snd_trident_free_pages(trident, voice->memblk);
925 			voice->memblk = NULL;
926 		}
927 	}
928 	snd_pcm_lib_free_pages(substream);
929 	if (evoice != NULL) {
930 		snd_trident_free_voice(trident, evoice);
931 		voice->extra = NULL;
932 	}
933 	return 0;
934 }
935 
936 /*---------------------------------------------------------------------------
937    snd_trident_playback_prepare
938 
939    Description: Prepare playback device for playback.
940 
941    Parameters:  substream  - PCM substream class
942 
943    Returns:     Error status
944 
945   ---------------------------------------------------------------------------*/
946 
947 static int snd_trident_playback_prepare(struct snd_pcm_substream *substream)
948 {
949 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
950 	struct snd_pcm_runtime *runtime = substream->runtime;
951 	struct snd_trident_voice *voice = runtime->private_data;
952 	struct snd_trident_voice *evoice = voice->extra;
953 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
954 
955 	spin_lock_irq(&trident->reg_lock);
956 
957 	/* set delta (rate) value */
958 	voice->Delta = snd_trident_convert_rate(runtime->rate);
959 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
960 
961 	/* set Loop Begin Address */
962 	if (voice->memblk)
963 		voice->LBA = voice->memblk->offset;
964 	else
965 		voice->LBA = runtime->dma_addr;
966 
967 	voice->CSO = 0;
968 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
969 	voice->CTRL = snd_trident_control_mode(substream);
970 	voice->FMC = 3;
971 	voice->GVSel = 1;
972 	voice->EC = 0;
973 	voice->Alpha = 0;
974 	voice->FMS = 0;
975 	voice->Vol = mix->vol;
976 	voice->RVol = mix->rvol;
977 	voice->CVol = mix->cvol;
978 	voice->Pan = mix->pan;
979 	voice->Attribute = 0;
980 #if 0
981 	voice->Attribute = (1<<(30-16))|(2<<(26-16))|
982 			   (0<<(24-16))|(0x1f<<(19-16));
983 #else
984 	voice->Attribute = 0;
985 #endif
986 
987 	snd_trident_write_voice_regs(trident, voice);
988 
989 	if (evoice != NULL) {
990 		evoice->Delta = voice->Delta;
991 		evoice->spurious_threshold = voice->spurious_threshold;
992 		evoice->LBA = voice->LBA;
993 		evoice->CSO = 0;
994 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
995 		evoice->CTRL = voice->CTRL;
996 		evoice->FMC = 3;
997 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
998 		evoice->EC = 0;
999 		evoice->Alpha = 0;
1000 		evoice->FMS = 0;
1001 		evoice->Vol = 0x3ff;			/* mute */
1002 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1003 		evoice->Pan = 0x7f;			/* mute */
1004 #if 0
1005 		evoice->Attribute = (1<<(30-16))|(2<<(26-16))|
1006 				    (0<<(24-16))|(0x1f<<(19-16));
1007 #else
1008 		evoice->Attribute = 0;
1009 #endif
1010 		snd_trident_write_voice_regs(trident, evoice);
1011 		evoice->isync2 = 1;
1012 		evoice->isync_mark = runtime->period_size;
1013 		evoice->ESO = (runtime->period_size * 2) - 1;
1014 	}
1015 
1016 	spin_unlock_irq(&trident->reg_lock);
1017 
1018 	return 0;
1019 }
1020 
1021 /*---------------------------------------------------------------------------
1022    snd_trident_capture_hw_params
1023 
1024    Description: Set the hardware parameters for the capture device.
1025 
1026    Parameters:  substream  - PCM substream class
1027 		hw_params  - hardware parameters
1028 
1029    Returns:     Error status
1030 
1031   ---------------------------------------------------------------------------*/
1032 
1033 static int snd_trident_capture_hw_params(struct snd_pcm_substream *substream,
1034 					 struct snd_pcm_hw_params *hw_params)
1035 {
1036 	return snd_trident_allocate_pcm_mem(substream, hw_params);
1037 }
1038 
1039 /*---------------------------------------------------------------------------
1040    snd_trident_capture_prepare
1041 
1042    Description: Prepare capture device for playback.
1043 
1044    Parameters:  substream  - PCM substream class
1045 
1046    Returns:     Error status
1047 
1048   ---------------------------------------------------------------------------*/
1049 
1050 static int snd_trident_capture_prepare(struct snd_pcm_substream *substream)
1051 {
1052 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1053 	struct snd_pcm_runtime *runtime = substream->runtime;
1054 	struct snd_trident_voice *voice = runtime->private_data;
1055 	unsigned int val, ESO_bytes;
1056 
1057 	spin_lock_irq(&trident->reg_lock);
1058 
1059 	// Initialize the channel and set channel Mode
1060 	outb(0, TRID_REG(trident, LEGACY_DMAR15));
1061 
1062 	// Set DMA channel operation mode register
1063 	outb(0x54, TRID_REG(trident, LEGACY_DMAR11));
1064 
1065 	// Set channel buffer Address, DMAR0 expects contiguous PCI memory area
1066 	voice->LBA = runtime->dma_addr;
1067 	outl(voice->LBA, TRID_REG(trident, LEGACY_DMAR0));
1068 	if (voice->memblk)
1069 		voice->LBA = voice->memblk->offset;
1070 
1071 	// set ESO
1072 	ESO_bytes = snd_pcm_lib_buffer_bytes(substream) - 1;
1073 	outb((ESO_bytes & 0x00ff0000) >> 16, TRID_REG(trident, LEGACY_DMAR6));
1074 	outw((ESO_bytes & 0x0000ffff), TRID_REG(trident, LEGACY_DMAR4));
1075 	ESO_bytes++;
1076 
1077 	// Set channel sample rate, 4.12 format
1078 	val = (((unsigned int) 48000L << 12) + (runtime->rate/2)) / runtime->rate;
1079 	outw(val, TRID_REG(trident, T4D_SBDELTA_DELTA_R));
1080 
1081 	// Set channel interrupt blk length
1082 	if (snd_pcm_format_width(runtime->format) == 16) {
1083 		val = (unsigned short) ((ESO_bytes >> 1) - 1);
1084 	} else {
1085 		val = (unsigned short) (ESO_bytes - 1);
1086 	}
1087 
1088 	outl((val << 16) | val, TRID_REG(trident, T4D_SBBL_SBCL));
1089 
1090 	// Right now, set format and start to run captureing,
1091 	// continuous run loop enable.
1092 	trident->bDMAStart = 0x19;	// 0001 1001b
1093 
1094 	if (snd_pcm_format_width(runtime->format) == 16)
1095 		trident->bDMAStart |= 0x80;
1096 	if (snd_pcm_format_signed(runtime->format))
1097 		trident->bDMAStart |= 0x20;
1098 	if (runtime->channels > 1)
1099 		trident->bDMAStart |= 0x40;
1100 
1101 	// Prepare capture intr channel
1102 
1103 	voice->Delta = snd_trident_convert_rate(runtime->rate);
1104 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1105 	voice->isync = 1;
1106 	voice->isync_mark = runtime->period_size;
1107 	voice->isync_max = runtime->buffer_size;
1108 
1109 	// Set voice parameters
1110 	voice->CSO = 0;
1111 	voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1112 	voice->CTRL = snd_trident_control_mode(substream);
1113 	voice->FMC = 3;
1114 	voice->RVol = 0x7f;
1115 	voice->CVol = 0x7f;
1116 	voice->GVSel = 1;
1117 	voice->Pan = 0x7f;		/* mute */
1118 	voice->Vol = 0x3ff;		/* mute */
1119 	voice->EC = 0;
1120 	voice->Alpha = 0;
1121 	voice->FMS = 0;
1122 	voice->Attribute = 0;
1123 
1124 	snd_trident_write_voice_regs(trident, voice);
1125 
1126 	spin_unlock_irq(&trident->reg_lock);
1127 	return 0;
1128 }
1129 
1130 /*---------------------------------------------------------------------------
1131    snd_trident_si7018_capture_hw_params
1132 
1133    Description: Set the hardware parameters for the capture device.
1134 
1135    Parameters:  substream  - PCM substream class
1136 		hw_params  - hardware parameters
1137 
1138    Returns:     Error status
1139 
1140   ---------------------------------------------------------------------------*/
1141 
1142 static int snd_trident_si7018_capture_hw_params(struct snd_pcm_substream *substream,
1143 						struct snd_pcm_hw_params *hw_params)
1144 {
1145 	int err;
1146 
1147 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
1148 		return err;
1149 
1150 	return snd_trident_allocate_evoice(substream, hw_params);
1151 }
1152 
1153 /*---------------------------------------------------------------------------
1154    snd_trident_si7018_capture_hw_free
1155 
1156    Description: Release the hardware resources for the capture device.
1157 
1158    Parameters:  substream  - PCM substream class
1159 
1160    Returns:     Error status
1161 
1162   ---------------------------------------------------------------------------*/
1163 
1164 static int snd_trident_si7018_capture_hw_free(struct snd_pcm_substream *substream)
1165 {
1166 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1167 	struct snd_pcm_runtime *runtime = substream->runtime;
1168 	struct snd_trident_voice *voice = runtime->private_data;
1169 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
1170 
1171 	snd_pcm_lib_free_pages(substream);
1172 	if (evoice != NULL) {
1173 		snd_trident_free_voice(trident, evoice);
1174 		voice->extra = NULL;
1175 	}
1176 	return 0;
1177 }
1178 
1179 /*---------------------------------------------------------------------------
1180    snd_trident_si7018_capture_prepare
1181 
1182    Description: Prepare capture device for playback.
1183 
1184    Parameters:  substream  - PCM substream class
1185 
1186    Returns:     Error status
1187 
1188   ---------------------------------------------------------------------------*/
1189 
1190 static int snd_trident_si7018_capture_prepare(struct snd_pcm_substream *substream)
1191 {
1192 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1193 	struct snd_pcm_runtime *runtime = substream->runtime;
1194 	struct snd_trident_voice *voice = runtime->private_data;
1195 	struct snd_trident_voice *evoice = voice->extra;
1196 
1197 	spin_lock_irq(&trident->reg_lock);
1198 
1199 	voice->LBA = runtime->dma_addr;
1200 	voice->Delta = snd_trident_convert_adc_rate(runtime->rate);
1201 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1202 
1203 	// Set voice parameters
1204 	voice->CSO = 0;
1205 	voice->ESO = runtime->buffer_size - 1;		/* in samples */
1206 	voice->CTRL = snd_trident_control_mode(substream);
1207 	voice->FMC = 0;
1208 	voice->RVol = 0;
1209 	voice->CVol = 0;
1210 	voice->GVSel = 1;
1211 	voice->Pan = T4D_DEFAULT_PCM_PAN;
1212 	voice->Vol = 0;
1213 	voice->EC = 0;
1214 	voice->Alpha = 0;
1215 	voice->FMS = 0;
1216 
1217 	voice->Attribute = (2 << (30-16)) |
1218 			   (2 << (26-16)) |
1219 			   (2 << (24-16)) |
1220 			   (1 << (23-16));
1221 
1222 	snd_trident_write_voice_regs(trident, voice);
1223 
1224 	if (evoice != NULL) {
1225 		evoice->Delta = snd_trident_convert_rate(runtime->rate);
1226 		evoice->spurious_threshold = voice->spurious_threshold;
1227 		evoice->LBA = voice->LBA;
1228 		evoice->CSO = 0;
1229 		evoice->ESO = (runtime->period_size * 2) + 20 - 1; /* in samples, 20 means correction */
1230 		evoice->CTRL = voice->CTRL;
1231 		evoice->FMC = 3;
1232 		evoice->GVSel = 0;
1233 		evoice->EC = 0;
1234 		evoice->Alpha = 0;
1235 		evoice->FMS = 0;
1236 		evoice->Vol = 0x3ff;			/* mute */
1237 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1238 		evoice->Pan = 0x7f;			/* mute */
1239 		evoice->Attribute = 0;
1240 		snd_trident_write_voice_regs(trident, evoice);
1241 		evoice->isync2 = 1;
1242 		evoice->isync_mark = runtime->period_size;
1243 		evoice->ESO = (runtime->period_size * 2) - 1;
1244 	}
1245 
1246 	spin_unlock_irq(&trident->reg_lock);
1247 	return 0;
1248 }
1249 
1250 /*---------------------------------------------------------------------------
1251    snd_trident_foldback_prepare
1252 
1253    Description: Prepare foldback capture device for playback.
1254 
1255    Parameters:  substream  - PCM substream class
1256 
1257    Returns:     Error status
1258 
1259   ---------------------------------------------------------------------------*/
1260 
1261 static int snd_trident_foldback_prepare(struct snd_pcm_substream *substream)
1262 {
1263 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1264 	struct snd_pcm_runtime *runtime = substream->runtime;
1265 	struct snd_trident_voice *voice = runtime->private_data;
1266 	struct snd_trident_voice *evoice = voice->extra;
1267 
1268 	spin_lock_irq(&trident->reg_lock);
1269 
1270 	/* Set channel buffer Address */
1271 	if (voice->memblk)
1272 		voice->LBA = voice->memblk->offset;
1273 	else
1274 		voice->LBA = runtime->dma_addr;
1275 
1276 	/* set target ESO for channel */
1277 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
1278 
1279 	/* set sample rate */
1280 	voice->Delta = 0x1000;
1281 	voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1282 
1283 	voice->CSO = 0;
1284 	voice->CTRL = snd_trident_control_mode(substream);
1285 	voice->FMC = 3;
1286 	voice->RVol = 0x7f;
1287 	voice->CVol = 0x7f;
1288 	voice->GVSel = 1;
1289 	voice->Pan = 0x7f;	/* mute */
1290 	voice->Vol = 0x3ff;	/* mute */
1291 	voice->EC = 0;
1292 	voice->Alpha = 0;
1293 	voice->FMS = 0;
1294 	voice->Attribute = 0;
1295 
1296 	/* set up capture channel */
1297 	outb(((voice->number & 0x3f) | 0x80), TRID_REG(trident, T4D_RCI + voice->foldback_chan));
1298 
1299 	snd_trident_write_voice_regs(trident, voice);
1300 
1301 	if (evoice != NULL) {
1302 		evoice->Delta = voice->Delta;
1303 		evoice->spurious_threshold = voice->spurious_threshold;
1304 		evoice->LBA = voice->LBA;
1305 		evoice->CSO = 0;
1306 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1307 		evoice->CTRL = voice->CTRL;
1308 		evoice->FMC = 3;
1309 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1310 		evoice->EC = 0;
1311 		evoice->Alpha = 0;
1312 		evoice->FMS = 0;
1313 		evoice->Vol = 0x3ff;			/* mute */
1314 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1315 		evoice->Pan = 0x7f;			/* mute */
1316 		evoice->Attribute = 0;
1317 		snd_trident_write_voice_regs(trident, evoice);
1318 		evoice->isync2 = 1;
1319 		evoice->isync_mark = runtime->period_size;
1320 		evoice->ESO = (runtime->period_size * 2) - 1;
1321 	}
1322 
1323 	spin_unlock_irq(&trident->reg_lock);
1324 	return 0;
1325 }
1326 
1327 /*---------------------------------------------------------------------------
1328    snd_trident_spdif_hw_params
1329 
1330    Description: Set the hardware parameters for the spdif device.
1331 
1332    Parameters:  substream  - PCM substream class
1333 		hw_params  - hardware parameters
1334 
1335    Returns:     Error status
1336 
1337   ---------------------------------------------------------------------------*/
1338 
1339 static int snd_trident_spdif_hw_params(struct snd_pcm_substream *substream,
1340 				       struct snd_pcm_hw_params *hw_params)
1341 {
1342 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1343 	unsigned int old_bits = 0, change = 0;
1344 	int err;
1345 
1346 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
1347 	if (err < 0)
1348 		return err;
1349 
1350 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1351 		err = snd_trident_allocate_evoice(substream, hw_params);
1352 		if (err < 0)
1353 			return err;
1354 	}
1355 
1356 	/* prepare SPDIF channel */
1357 	spin_lock_irq(&trident->reg_lock);
1358 	old_bits = trident->spdif_pcm_bits;
1359 	if (old_bits & IEC958_AES0_PROFESSIONAL)
1360 		trident->spdif_pcm_bits &= ~IEC958_AES0_PRO_FS;
1361 	else
1362 		trident->spdif_pcm_bits &= ~(IEC958_AES3_CON_FS << 24);
1363 	if (params_rate(hw_params) >= 48000) {
1364 		trident->spdif_pcm_ctrl = 0x3c;	// 48000 Hz
1365 		trident->spdif_pcm_bits |=
1366 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1367 				IEC958_AES0_PRO_FS_48000 :
1368 				(IEC958_AES3_CON_FS_48000 << 24);
1369 	}
1370 	else if (params_rate(hw_params) >= 44100) {
1371 		trident->spdif_pcm_ctrl = 0x3e;	// 44100 Hz
1372 		trident->spdif_pcm_bits |=
1373 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1374 				IEC958_AES0_PRO_FS_44100 :
1375 				(IEC958_AES3_CON_FS_44100 << 24);
1376 	}
1377 	else {
1378 		trident->spdif_pcm_ctrl = 0x3d;	// 32000 Hz
1379 		trident->spdif_pcm_bits |=
1380 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1381 				IEC958_AES0_PRO_FS_32000 :
1382 				(IEC958_AES3_CON_FS_32000 << 24);
1383 	}
1384 	change = old_bits != trident->spdif_pcm_bits;
1385 	spin_unlock_irq(&trident->reg_lock);
1386 
1387 	if (change)
1388 		snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE, &trident->spdif_pcm_ctl->id);
1389 
1390 	return 0;
1391 }
1392 
1393 /*---------------------------------------------------------------------------
1394    snd_trident_spdif_prepare
1395 
1396    Description: Prepare SPDIF device for playback.
1397 
1398    Parameters:  substream  - PCM substream class
1399 
1400    Returns:     Error status
1401 
1402   ---------------------------------------------------------------------------*/
1403 
1404 static int snd_trident_spdif_prepare(struct snd_pcm_substream *substream)
1405 {
1406 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1407 	struct snd_pcm_runtime *runtime = substream->runtime;
1408 	struct snd_trident_voice *voice = runtime->private_data;
1409 	struct snd_trident_voice *evoice = voice->extra;
1410 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
1411 	unsigned int RESO, LBAO;
1412 	unsigned int temp;
1413 
1414 	spin_lock_irq(&trident->reg_lock);
1415 
1416 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1417 
1418 		/* set delta (rate) value */
1419 		voice->Delta = snd_trident_convert_rate(runtime->rate);
1420 		voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1421 
1422 		/* set Loop Back Address */
1423 		LBAO = runtime->dma_addr;
1424 		if (voice->memblk)
1425 			voice->LBA = voice->memblk->offset;
1426 		else
1427 			voice->LBA = LBAO;
1428 
1429 		voice->isync = 1;
1430 		voice->isync3 = 1;
1431 		voice->isync_mark = runtime->period_size;
1432 		voice->isync_max = runtime->buffer_size;
1433 
1434 		/* set target ESO for channel */
1435 		RESO = runtime->buffer_size - 1;
1436 		voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1437 
1438 		/* set ctrl mode */
1439 		voice->CTRL = snd_trident_control_mode(substream);
1440 
1441 		voice->FMC = 3;
1442 		voice->RVol = 0x7f;
1443 		voice->CVol = 0x7f;
1444 		voice->GVSel = 1;
1445 		voice->Pan = 0x7f;
1446 		voice->Vol = 0x3ff;
1447 		voice->EC = 0;
1448 		voice->CSO = 0;
1449 		voice->Alpha = 0;
1450 		voice->FMS = 0;
1451 		voice->Attribute = 0;
1452 
1453 		/* prepare surrogate IRQ channel */
1454 		snd_trident_write_voice_regs(trident, voice);
1455 
1456 		outw((RESO & 0xffff), TRID_REG(trident, NX_SPESO));
1457 		outb((RESO >> 16), TRID_REG(trident, NX_SPESO + 2));
1458 		outl((LBAO & 0xfffffffc), TRID_REG(trident, NX_SPLBA));
1459 		outw((voice->CSO & 0xffff), TRID_REG(trident, NX_SPCTRL_SPCSO));
1460 		outb((voice->CSO >> 16), TRID_REG(trident, NX_SPCTRL_SPCSO + 2));
1461 
1462 		/* set SPDIF setting */
1463 		outb(trident->spdif_pcm_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1464 		outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1465 
1466 	} else {	/* SiS */
1467 
1468 		/* set delta (rate) value */
1469 		voice->Delta = 0x800;
1470 		voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1471 
1472 		/* set Loop Begin Address */
1473 		if (voice->memblk)
1474 			voice->LBA = voice->memblk->offset;
1475 		else
1476 			voice->LBA = runtime->dma_addr;
1477 
1478 		voice->CSO = 0;
1479 		voice->ESO = runtime->buffer_size - 1;	/* in samples */
1480 		voice->CTRL = snd_trident_control_mode(substream);
1481 		voice->FMC = 3;
1482 		voice->GVSel = 1;
1483 		voice->EC = 0;
1484 		voice->Alpha = 0;
1485 		voice->FMS = 0;
1486 		voice->Vol = mix->vol;
1487 		voice->RVol = mix->rvol;
1488 		voice->CVol = mix->cvol;
1489 		voice->Pan = mix->pan;
1490 		voice->Attribute = (1<<(30-16))|(7<<(26-16))|
1491 				   (0<<(24-16))|(0<<(19-16));
1492 
1493 		snd_trident_write_voice_regs(trident, voice);
1494 
1495 		if (evoice != NULL) {
1496 			evoice->Delta = voice->Delta;
1497 			evoice->spurious_threshold = voice->spurious_threshold;
1498 			evoice->LBA = voice->LBA;
1499 			evoice->CSO = 0;
1500 			evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1501 			evoice->CTRL = voice->CTRL;
1502 			evoice->FMC = 3;
1503 			evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1504 			evoice->EC = 0;
1505 			evoice->Alpha = 0;
1506 			evoice->FMS = 0;
1507 			evoice->Vol = 0x3ff;			/* mute */
1508 			evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1509 			evoice->Pan = 0x7f;			/* mute */
1510 			evoice->Attribute = 0;
1511 			snd_trident_write_voice_regs(trident, evoice);
1512 			evoice->isync2 = 1;
1513 			evoice->isync_mark = runtime->period_size;
1514 			evoice->ESO = (runtime->period_size * 2) - 1;
1515 		}
1516 
1517 		outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1518 		temp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
1519 		temp &= ~(1<<19);
1520 		outl(temp, TRID_REG(trident, T4D_LFO_GC_CIR));
1521 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1522 		temp |= SPDIF_EN;
1523 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1524 	}
1525 
1526 	spin_unlock_irq(&trident->reg_lock);
1527 
1528 	return 0;
1529 }
1530 
1531 /*---------------------------------------------------------------------------
1532    snd_trident_trigger
1533 
1534    Description: Start/stop devices
1535 
1536    Parameters:  substream  - PCM substream class
1537    		cmd	- trigger command (STOP, GO)
1538 
1539    Returns:     Error status
1540 
1541   ---------------------------------------------------------------------------*/
1542 
1543 static int snd_trident_trigger(struct snd_pcm_substream *substream,
1544 			       int cmd)
1545 
1546 {
1547 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1548 	struct snd_pcm_substream *s;
1549 	unsigned int what, whati, capture_flag, spdif_flag;
1550 	struct snd_trident_voice *voice, *evoice;
1551 	unsigned int val, go;
1552 
1553 	switch (cmd) {
1554 	case SNDRV_PCM_TRIGGER_START:
1555 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1556 	case SNDRV_PCM_TRIGGER_RESUME:
1557 		go = 1;
1558 		break;
1559 	case SNDRV_PCM_TRIGGER_STOP:
1560 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1561 	case SNDRV_PCM_TRIGGER_SUSPEND:
1562 		go = 0;
1563 		break;
1564 	default:
1565 		return -EINVAL;
1566 	}
1567 	what = whati = capture_flag = spdif_flag = 0;
1568 	spin_lock(&trident->reg_lock);
1569 	val = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
1570 	snd_pcm_group_for_each_entry(s, substream) {
1571 		if ((struct snd_trident *) snd_pcm_substream_chip(s) == trident) {
1572 			voice = s->runtime->private_data;
1573 			evoice = voice->extra;
1574 			what |= 1 << (voice->number & 0x1f);
1575 			if (evoice == NULL) {
1576 				whati |= 1 << (voice->number & 0x1f);
1577 			} else {
1578 				what |= 1 << (evoice->number & 0x1f);
1579 				whati |= 1 << (evoice->number & 0x1f);
1580 				if (go)
1581 					evoice->stimer = val;
1582 			}
1583 			if (go) {
1584 				voice->running = 1;
1585 				voice->stimer = val;
1586 			} else {
1587 				voice->running = 0;
1588 			}
1589 			snd_pcm_trigger_done(s, substream);
1590 			if (voice->capture)
1591 				capture_flag = 1;
1592 			if (voice->spdif)
1593 				spdif_flag = 1;
1594 		}
1595 	}
1596 	if (spdif_flag) {
1597 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1598 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1599 			val = trident->spdif_pcm_ctrl;
1600 			if (!go)
1601 				val &= ~(0x28);
1602 			outb(val, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1603 		} else {
1604 			outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1605 			val = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) | SPDIF_EN;
1606 			outl(val, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1607 		}
1608 	}
1609 	if (!go)
1610 		outl(what, TRID_REG(trident, T4D_STOP_B));
1611 	val = inl(TRID_REG(trident, T4D_AINTEN_B));
1612 	if (go) {
1613 		val |= whati;
1614 	} else {
1615 		val &= ~whati;
1616 	}
1617 	outl(val, TRID_REG(trident, T4D_AINTEN_B));
1618 	if (go) {
1619 		outl(what, TRID_REG(trident, T4D_START_B));
1620 
1621 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1622 			outb(trident->bDMAStart, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1623 	} else {
1624 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1625 			outb(0x00, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1626 	}
1627 	spin_unlock(&trident->reg_lock);
1628 	return 0;
1629 }
1630 
1631 /*---------------------------------------------------------------------------
1632    snd_trident_playback_pointer
1633 
1634    Description: This routine return the playback position
1635 
1636    Parameters:	substream  - PCM substream class
1637 
1638    Returns:     position of buffer
1639 
1640   ---------------------------------------------------------------------------*/
1641 
1642 static snd_pcm_uframes_t snd_trident_playback_pointer(struct snd_pcm_substream *substream)
1643 {
1644 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1645 	struct snd_pcm_runtime *runtime = substream->runtime;
1646 	struct snd_trident_voice *voice = runtime->private_data;
1647 	unsigned int cso;
1648 
1649 	if (!voice->running)
1650 		return 0;
1651 
1652 	spin_lock(&trident->reg_lock);
1653 
1654 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
1655 
1656 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
1657 		cso = inw(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS + 2));
1658 	} else {		// ID_4DWAVE_NX
1659 		cso = (unsigned int) inl(TRID_REG(trident, CH_NX_DELTA_CSO)) & 0x00ffffff;
1660 	}
1661 
1662 	spin_unlock(&trident->reg_lock);
1663 
1664 	if (cso >= runtime->buffer_size)
1665 		cso = 0;
1666 
1667 	return cso;
1668 }
1669 
1670 /*---------------------------------------------------------------------------
1671    snd_trident_capture_pointer
1672 
1673    Description: This routine return the capture position
1674 
1675    Parameters:   pcm1    - PCM device class
1676 
1677    Returns:     position of buffer
1678 
1679   ---------------------------------------------------------------------------*/
1680 
1681 static snd_pcm_uframes_t snd_trident_capture_pointer(struct snd_pcm_substream *substream)
1682 {
1683 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1684 	struct snd_pcm_runtime *runtime = substream->runtime;
1685 	struct snd_trident_voice *voice = runtime->private_data;
1686 	unsigned int result;
1687 
1688 	if (!voice->running)
1689 		return 0;
1690 
1691 	result = inw(TRID_REG(trident, T4D_SBBL_SBCL));
1692 	if (runtime->channels > 1)
1693 		result >>= 1;
1694 	if (result > 0)
1695 		result = runtime->buffer_size - result;
1696 
1697 	return result;
1698 }
1699 
1700 /*---------------------------------------------------------------------------
1701    snd_trident_spdif_pointer
1702 
1703    Description: This routine return the SPDIF playback position
1704 
1705    Parameters:	substream  - PCM substream class
1706 
1707    Returns:     position of buffer
1708 
1709   ---------------------------------------------------------------------------*/
1710 
1711 static snd_pcm_uframes_t snd_trident_spdif_pointer(struct snd_pcm_substream *substream)
1712 {
1713 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1714 	struct snd_pcm_runtime *runtime = substream->runtime;
1715 	struct snd_trident_voice *voice = runtime->private_data;
1716 	unsigned int result;
1717 
1718 	if (!voice->running)
1719 		return 0;
1720 
1721 	result = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
1722 
1723 	return result;
1724 }
1725 
1726 /*
1727  *  Playback support device description
1728  */
1729 
1730 static struct snd_pcm_hardware snd_trident_playback =
1731 {
1732 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1733 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1734 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1735 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1736 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1737 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1738 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1739 	.rate_min =		4000,
1740 	.rate_max =		48000,
1741 	.channels_min =		1,
1742 	.channels_max =		2,
1743 	.buffer_bytes_max =	(256*1024),
1744 	.period_bytes_min =	64,
1745 	.period_bytes_max =	(256*1024),
1746 	.periods_min =		1,
1747 	.periods_max =		1024,
1748 	.fifo_size =		0,
1749 };
1750 
1751 /*
1752  *  Capture support device description
1753  */
1754 
1755 static struct snd_pcm_hardware snd_trident_capture =
1756 {
1757 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1758 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1759 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1760 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1761 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1762 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1763 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1764 	.rate_min =		4000,
1765 	.rate_max =		48000,
1766 	.channels_min =		1,
1767 	.channels_max =		2,
1768 	.buffer_bytes_max =	(128*1024),
1769 	.period_bytes_min =	64,
1770 	.period_bytes_max =	(128*1024),
1771 	.periods_min =		1,
1772 	.periods_max =		1024,
1773 	.fifo_size =		0,
1774 };
1775 
1776 /*
1777  *  Foldback capture support device description
1778  */
1779 
1780 static struct snd_pcm_hardware snd_trident_foldback =
1781 {
1782 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1783 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1784 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1785 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1786 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1787 	.rates =		SNDRV_PCM_RATE_48000,
1788 	.rate_min =		48000,
1789 	.rate_max =		48000,
1790 	.channels_min =		2,
1791 	.channels_max =		2,
1792 	.buffer_bytes_max =	(128*1024),
1793 	.period_bytes_min =	64,
1794 	.period_bytes_max =	(128*1024),
1795 	.periods_min =		1,
1796 	.periods_max =		1024,
1797 	.fifo_size =		0,
1798 };
1799 
1800 /*
1801  *  SPDIF playback support device description
1802  */
1803 
1804 static struct snd_pcm_hardware snd_trident_spdif =
1805 {
1806 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1807 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1808 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1809 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1810 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1811 	.rates =		(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
1812 				 SNDRV_PCM_RATE_48000),
1813 	.rate_min =		32000,
1814 	.rate_max =		48000,
1815 	.channels_min =		2,
1816 	.channels_max =		2,
1817 	.buffer_bytes_max =	(128*1024),
1818 	.period_bytes_min =	64,
1819 	.period_bytes_max =	(128*1024),
1820 	.periods_min =		1,
1821 	.periods_max =		1024,
1822 	.fifo_size =		0,
1823 };
1824 
1825 static struct snd_pcm_hardware snd_trident_spdif_7018 =
1826 {
1827 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1828 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1829 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1830 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1831 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1832 	.rates =		SNDRV_PCM_RATE_48000,
1833 	.rate_min =		48000,
1834 	.rate_max =		48000,
1835 	.channels_min =		2,
1836 	.channels_max =		2,
1837 	.buffer_bytes_max =	(128*1024),
1838 	.period_bytes_min =	64,
1839 	.period_bytes_max =	(128*1024),
1840 	.periods_min =		1,
1841 	.periods_max =		1024,
1842 	.fifo_size =		0,
1843 };
1844 
1845 static void snd_trident_pcm_free_substream(struct snd_pcm_runtime *runtime)
1846 {
1847 	struct snd_trident_voice *voice = runtime->private_data;
1848 	struct snd_trident *trident;
1849 
1850 	if (voice) {
1851 		trident = voice->trident;
1852 		snd_trident_free_voice(trident, voice);
1853 	}
1854 }
1855 
1856 static int snd_trident_playback_open(struct snd_pcm_substream *substream)
1857 {
1858 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1859 	struct snd_pcm_runtime *runtime = substream->runtime;
1860 	struct snd_trident_voice *voice;
1861 
1862 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1863 	if (voice == NULL)
1864 		return -EAGAIN;
1865 	snd_trident_pcm_mixer_build(trident, voice, substream);
1866 	voice->substream = substream;
1867 	runtime->private_data = voice;
1868 	runtime->private_free = snd_trident_pcm_free_substream;
1869 	runtime->hw = snd_trident_playback;
1870 	snd_pcm_set_sync(substream);
1871 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1872 	return 0;
1873 }
1874 
1875 /*---------------------------------------------------------------------------
1876    snd_trident_playback_close
1877 
1878    Description: This routine will close the 4DWave playback device. For now
1879                 we will simply free the dma transfer buffer.
1880 
1881    Parameters:	substream  - PCM substream class
1882 
1883   ---------------------------------------------------------------------------*/
1884 static int snd_trident_playback_close(struct snd_pcm_substream *substream)
1885 {
1886 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1887 	struct snd_pcm_runtime *runtime = substream->runtime;
1888 	struct snd_trident_voice *voice = runtime->private_data;
1889 
1890 	snd_trident_pcm_mixer_free(trident, voice, substream);
1891 	return 0;
1892 }
1893 
1894 /*---------------------------------------------------------------------------
1895    snd_trident_spdif_open
1896 
1897    Description: This routine will open the 4DWave SPDIF device.
1898 
1899    Parameters:	substream  - PCM substream class
1900 
1901    Returns:     status  - success or failure flag
1902 
1903   ---------------------------------------------------------------------------*/
1904 
1905 static int snd_trident_spdif_open(struct snd_pcm_substream *substream)
1906 {
1907 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1908 	struct snd_trident_voice *voice;
1909 	struct snd_pcm_runtime *runtime = substream->runtime;
1910 
1911 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1912 	if (voice == NULL)
1913 		return -EAGAIN;
1914 	voice->spdif = 1;
1915 	voice->substream = substream;
1916 	spin_lock_irq(&trident->reg_lock);
1917 	trident->spdif_pcm_bits = trident->spdif_bits;
1918 	spin_unlock_irq(&trident->reg_lock);
1919 
1920 	runtime->private_data = voice;
1921 	runtime->private_free = snd_trident_pcm_free_substream;
1922 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1923 		runtime->hw = snd_trident_spdif;
1924 	} else {
1925 		runtime->hw = snd_trident_spdif_7018;
1926 	}
1927 
1928 	trident->spdif_pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1929 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1930 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1931 
1932 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1933 	return 0;
1934 }
1935 
1936 
1937 /*---------------------------------------------------------------------------
1938    snd_trident_spdif_close
1939 
1940    Description: This routine will close the 4DWave SPDIF device.
1941 
1942    Parameters:	substream  - PCM substream class
1943 
1944   ---------------------------------------------------------------------------*/
1945 
1946 static int snd_trident_spdif_close(struct snd_pcm_substream *substream)
1947 {
1948 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1949 	unsigned int temp;
1950 
1951 	spin_lock_irq(&trident->reg_lock);
1952 	// restore default SPDIF setting
1953 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1954 		outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1955 		outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
1956 	} else {
1957 		outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
1958 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1959 		if (trident->spdif_ctrl) {
1960 			temp |= SPDIF_EN;
1961 		} else {
1962 			temp &= ~SPDIF_EN;
1963 		}
1964 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1965 	}
1966 	spin_unlock_irq(&trident->reg_lock);
1967 	trident->spdif_pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1968 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1969 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1970 	return 0;
1971 }
1972 
1973 /*---------------------------------------------------------------------------
1974    snd_trident_capture_open
1975 
1976    Description: This routine will open the 4DWave capture device.
1977 
1978    Parameters:	substream  - PCM substream class
1979 
1980    Returns:     status  - success or failure flag
1981 
1982   ---------------------------------------------------------------------------*/
1983 
1984 static int snd_trident_capture_open(struct snd_pcm_substream *substream)
1985 {
1986 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1987 	struct snd_trident_voice *voice;
1988 	struct snd_pcm_runtime *runtime = substream->runtime;
1989 
1990 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1991 	if (voice == NULL)
1992 		return -EAGAIN;
1993 	voice->capture = 1;
1994 	voice->substream = substream;
1995 	runtime->private_data = voice;
1996 	runtime->private_free = snd_trident_pcm_free_substream;
1997 	runtime->hw = snd_trident_capture;
1998 	snd_pcm_set_sync(substream);
1999 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
2000 	return 0;
2001 }
2002 
2003 /*---------------------------------------------------------------------------
2004    snd_trident_capture_close
2005 
2006    Description: This routine will close the 4DWave capture device. For now
2007                 we will simply free the dma transfer buffer.
2008 
2009    Parameters:	substream  - PCM substream class
2010 
2011   ---------------------------------------------------------------------------*/
2012 static int snd_trident_capture_close(struct snd_pcm_substream *substream)
2013 {
2014 	return 0;
2015 }
2016 
2017 /*---------------------------------------------------------------------------
2018    snd_trident_foldback_open
2019 
2020    Description: This routine will open the 4DWave foldback capture device.
2021 
2022    Parameters:	substream  - PCM substream class
2023 
2024    Returns:     status  - success or failure flag
2025 
2026   ---------------------------------------------------------------------------*/
2027 
2028 static int snd_trident_foldback_open(struct snd_pcm_substream *substream)
2029 {
2030 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2031 	struct snd_trident_voice *voice;
2032 	struct snd_pcm_runtime *runtime = substream->runtime;
2033 
2034 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
2035 	if (voice == NULL)
2036 		return -EAGAIN;
2037 	voice->foldback_chan = substream->number;
2038 	voice->substream = substream;
2039 	runtime->private_data = voice;
2040 	runtime->private_free = snd_trident_pcm_free_substream;
2041 	runtime->hw = snd_trident_foldback;
2042 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
2043 	return 0;
2044 }
2045 
2046 /*---------------------------------------------------------------------------
2047    snd_trident_foldback_close
2048 
2049    Description: This routine will close the 4DWave foldback capture device.
2050 		For now we will simply free the dma transfer buffer.
2051 
2052    Parameters:	substream  - PCM substream class
2053 
2054   ---------------------------------------------------------------------------*/
2055 static int snd_trident_foldback_close(struct snd_pcm_substream *substream)
2056 {
2057 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2058 	struct snd_trident_voice *voice;
2059 	struct snd_pcm_runtime *runtime = substream->runtime;
2060 	voice = runtime->private_data;
2061 
2062 	/* stop capture channel */
2063 	spin_lock_irq(&trident->reg_lock);
2064 	outb(0x00, TRID_REG(trident, T4D_RCI + voice->foldback_chan));
2065 	spin_unlock_irq(&trident->reg_lock);
2066 	return 0;
2067 }
2068 
2069 /*---------------------------------------------------------------------------
2070    PCM operations
2071   ---------------------------------------------------------------------------*/
2072 
2073 static struct snd_pcm_ops snd_trident_playback_ops = {
2074 	.open =		snd_trident_playback_open,
2075 	.close =	snd_trident_playback_close,
2076 	.ioctl =	snd_trident_ioctl,
2077 	.hw_params =	snd_trident_hw_params,
2078 	.hw_free =	snd_trident_hw_free,
2079 	.prepare =	snd_trident_playback_prepare,
2080 	.trigger =	snd_trident_trigger,
2081 	.pointer =	snd_trident_playback_pointer,
2082 };
2083 
2084 static struct snd_pcm_ops snd_trident_nx_playback_ops = {
2085 	.open =		snd_trident_playback_open,
2086 	.close =	snd_trident_playback_close,
2087 	.ioctl =	snd_trident_ioctl,
2088 	.hw_params =	snd_trident_hw_params,
2089 	.hw_free =	snd_trident_hw_free,
2090 	.prepare =	snd_trident_playback_prepare,
2091 	.trigger =	snd_trident_trigger,
2092 	.pointer =	snd_trident_playback_pointer,
2093 	.page =		snd_pcm_sgbuf_ops_page,
2094 };
2095 
2096 static struct snd_pcm_ops snd_trident_capture_ops = {
2097 	.open =		snd_trident_capture_open,
2098 	.close =	snd_trident_capture_close,
2099 	.ioctl =	snd_trident_ioctl,
2100 	.hw_params =	snd_trident_capture_hw_params,
2101 	.hw_free =	snd_trident_hw_free,
2102 	.prepare =	snd_trident_capture_prepare,
2103 	.trigger =	snd_trident_trigger,
2104 	.pointer =	snd_trident_capture_pointer,
2105 };
2106 
2107 static struct snd_pcm_ops snd_trident_si7018_capture_ops = {
2108 	.open =		snd_trident_capture_open,
2109 	.close =	snd_trident_capture_close,
2110 	.ioctl =	snd_trident_ioctl,
2111 	.hw_params =	snd_trident_si7018_capture_hw_params,
2112 	.hw_free =	snd_trident_si7018_capture_hw_free,
2113 	.prepare =	snd_trident_si7018_capture_prepare,
2114 	.trigger =	snd_trident_trigger,
2115 	.pointer =	snd_trident_playback_pointer,
2116 };
2117 
2118 static struct snd_pcm_ops snd_trident_foldback_ops = {
2119 	.open =		snd_trident_foldback_open,
2120 	.close =	snd_trident_foldback_close,
2121 	.ioctl =	snd_trident_ioctl,
2122 	.hw_params =	snd_trident_hw_params,
2123 	.hw_free =	snd_trident_hw_free,
2124 	.prepare =	snd_trident_foldback_prepare,
2125 	.trigger =	snd_trident_trigger,
2126 	.pointer =	snd_trident_playback_pointer,
2127 };
2128 
2129 static struct snd_pcm_ops snd_trident_nx_foldback_ops = {
2130 	.open =		snd_trident_foldback_open,
2131 	.close =	snd_trident_foldback_close,
2132 	.ioctl =	snd_trident_ioctl,
2133 	.hw_params =	snd_trident_hw_params,
2134 	.hw_free =	snd_trident_hw_free,
2135 	.prepare =	snd_trident_foldback_prepare,
2136 	.trigger =	snd_trident_trigger,
2137 	.pointer =	snd_trident_playback_pointer,
2138 	.page =		snd_pcm_sgbuf_ops_page,
2139 };
2140 
2141 static struct snd_pcm_ops snd_trident_spdif_ops = {
2142 	.open =		snd_trident_spdif_open,
2143 	.close =	snd_trident_spdif_close,
2144 	.ioctl =	snd_trident_ioctl,
2145 	.hw_params =	snd_trident_spdif_hw_params,
2146 	.hw_free =	snd_trident_hw_free,
2147 	.prepare =	snd_trident_spdif_prepare,
2148 	.trigger =	snd_trident_trigger,
2149 	.pointer =	snd_trident_spdif_pointer,
2150 };
2151 
2152 static struct snd_pcm_ops snd_trident_spdif_7018_ops = {
2153 	.open =		snd_trident_spdif_open,
2154 	.close =	snd_trident_spdif_close,
2155 	.ioctl =	snd_trident_ioctl,
2156 	.hw_params =	snd_trident_spdif_hw_params,
2157 	.hw_free =	snd_trident_hw_free,
2158 	.prepare =	snd_trident_spdif_prepare,
2159 	.trigger =	snd_trident_trigger,
2160 	.pointer =	snd_trident_playback_pointer,
2161 };
2162 
2163 /*---------------------------------------------------------------------------
2164    snd_trident_pcm
2165 
2166    Description: This routine registers the 4DWave device for PCM support.
2167 
2168    Parameters:  trident - pointer to target device class for 4DWave.
2169 
2170    Returns:     None
2171 
2172   ---------------------------------------------------------------------------*/
2173 
2174 int snd_trident_pcm(struct snd_trident *trident, int device)
2175 {
2176 	struct snd_pcm *pcm;
2177 	int err;
2178 
2179 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, trident->ChanPCM, 1, &pcm)) < 0)
2180 		return err;
2181 
2182 	pcm->private_data = trident;
2183 
2184 	if (trident->tlb.entries) {
2185 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_nx_playback_ops);
2186 	} else {
2187 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_playback_ops);
2188 	}
2189 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
2190 			trident->device != TRIDENT_DEVICE_ID_SI7018 ?
2191 			&snd_trident_capture_ops :
2192 			&snd_trident_si7018_capture_ops);
2193 
2194 	pcm->info_flags = 0;
2195 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
2196 	strcpy(pcm->name, "Trident 4DWave");
2197 	trident->pcm = pcm;
2198 
2199 	if (trident->tlb.entries) {
2200 		struct snd_pcm_substream *substream;
2201 		for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
2202 			snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
2203 						      snd_dma_pci_data(trident->pci),
2204 						      64*1024, 128*1024);
2205 		snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
2206 					      SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
2207 					      64*1024, 128*1024);
2208 	} else {
2209 		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2210 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2211 	}
2212 
2213 	return 0;
2214 }
2215 
2216 /*---------------------------------------------------------------------------
2217    snd_trident_foldback_pcm
2218 
2219    Description: This routine registers the 4DWave device for foldback PCM support.
2220 
2221    Parameters:  trident - pointer to target device class for 4DWave.
2222 
2223    Returns:     None
2224 
2225   ---------------------------------------------------------------------------*/
2226 
2227 int snd_trident_foldback_pcm(struct snd_trident *trident, int device)
2228 {
2229 	struct snd_pcm *foldback;
2230 	int err;
2231 	int num_chan = 3;
2232 	struct snd_pcm_substream *substream;
2233 
2234 	if (trident->device == TRIDENT_DEVICE_ID_NX)
2235 		num_chan = 4;
2236 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, 0, num_chan, &foldback)) < 0)
2237 		return err;
2238 
2239 	foldback->private_data = trident;
2240 	if (trident->tlb.entries)
2241 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_nx_foldback_ops);
2242 	else
2243 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_foldback_ops);
2244 	foldback->info_flags = 0;
2245 	strcpy(foldback->name, "Trident 4DWave");
2246 	substream = foldback->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
2247 	strcpy(substream->name, "Front Mixer");
2248 	substream = substream->next;
2249 	strcpy(substream->name, "Reverb Mixer");
2250 	substream = substream->next;
2251 	strcpy(substream->name, "Chorus Mixer");
2252 	if (num_chan == 4) {
2253 		substream = substream->next;
2254 		strcpy(substream->name, "Second AC'97 ADC");
2255 	}
2256 	trident->foldback = foldback;
2257 
2258 	if (trident->tlb.entries)
2259 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV_SG,
2260 						      snd_dma_pci_data(trident->pci), 0, 128*1024);
2261 	else
2262 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV,
2263 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2264 
2265 	return 0;
2266 }
2267 
2268 /*---------------------------------------------------------------------------
2269    snd_trident_spdif
2270 
2271    Description: This routine registers the 4DWave-NX device for SPDIF support.
2272 
2273    Parameters:  trident - pointer to target device class for 4DWave-NX.
2274 
2275    Returns:     None
2276 
2277   ---------------------------------------------------------------------------*/
2278 
2279 int snd_trident_spdif_pcm(struct snd_trident *trident, int device)
2280 {
2281 	struct snd_pcm *spdif;
2282 	int err;
2283 
2284 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx IEC958", device, 1, 0, &spdif)) < 0)
2285 		return err;
2286 
2287 	spdif->private_data = trident;
2288 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2289 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_ops);
2290 	} else {
2291 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_7018_ops);
2292 	}
2293 	spdif->info_flags = 0;
2294 	strcpy(spdif->name, "Trident 4DWave IEC958");
2295 	trident->spdif = spdif;
2296 
2297 	snd_pcm_lib_preallocate_pages_for_all(spdif, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2298 
2299 	return 0;
2300 }
2301 
2302 /*
2303  *  Mixer part
2304  */
2305 
2306 
2307 /*---------------------------------------------------------------------------
2308     snd_trident_spdif_control
2309 
2310     Description: enable/disable S/PDIF out from ac97 mixer
2311   ---------------------------------------------------------------------------*/
2312 
2313 #define snd_trident_spdif_control_info	snd_ctl_boolean_mono_info
2314 
2315 static int snd_trident_spdif_control_get(struct snd_kcontrol *kcontrol,
2316 					 struct snd_ctl_elem_value *ucontrol)
2317 {
2318 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2319 	unsigned char val;
2320 
2321 	spin_lock_irq(&trident->reg_lock);
2322 	val = trident->spdif_ctrl;
2323 	ucontrol->value.integer.value[0] = val == kcontrol->private_value;
2324 	spin_unlock_irq(&trident->reg_lock);
2325 	return 0;
2326 }
2327 
2328 static int snd_trident_spdif_control_put(struct snd_kcontrol *kcontrol,
2329 					 struct snd_ctl_elem_value *ucontrol)
2330 {
2331 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2332 	unsigned char val;
2333 	int change;
2334 
2335 	val = ucontrol->value.integer.value[0] ? (unsigned char) kcontrol->private_value : 0x00;
2336 	spin_lock_irq(&trident->reg_lock);
2337 	/* S/PDIF C Channel bits 0-31 : 48khz, SCMS disabled */
2338 	change = trident->spdif_ctrl != val;
2339 	trident->spdif_ctrl = val;
2340 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2341 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0) {
2342 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2343 			outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
2344 		}
2345 	} else {
2346 		if (trident->spdif == NULL) {
2347 			unsigned int temp;
2348 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2349 			temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & ~SPDIF_EN;
2350 			if (val)
2351 				temp |= SPDIF_EN;
2352 			outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
2353 		}
2354 	}
2355 	spin_unlock_irq(&trident->reg_lock);
2356 	return change;
2357 }
2358 
2359 static struct snd_kcontrol_new snd_trident_spdif_control =
2360 {
2361 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2362 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
2363 	.info =		snd_trident_spdif_control_info,
2364 	.get =		snd_trident_spdif_control_get,
2365 	.put =		snd_trident_spdif_control_put,
2366 	.private_value = 0x28,
2367 };
2368 
2369 /*---------------------------------------------------------------------------
2370     snd_trident_spdif_default
2371 
2372     Description: put/get the S/PDIF default settings
2373   ---------------------------------------------------------------------------*/
2374 
2375 static int snd_trident_spdif_default_info(struct snd_kcontrol *kcontrol,
2376 					  struct snd_ctl_elem_info *uinfo)
2377 {
2378 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2379 	uinfo->count = 1;
2380 	return 0;
2381 }
2382 
2383 static int snd_trident_spdif_default_get(struct snd_kcontrol *kcontrol,
2384 					 struct snd_ctl_elem_value *ucontrol)
2385 {
2386 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2387 
2388 	spin_lock_irq(&trident->reg_lock);
2389 	ucontrol->value.iec958.status[0] = (trident->spdif_bits >> 0) & 0xff;
2390 	ucontrol->value.iec958.status[1] = (trident->spdif_bits >> 8) & 0xff;
2391 	ucontrol->value.iec958.status[2] = (trident->spdif_bits >> 16) & 0xff;
2392 	ucontrol->value.iec958.status[3] = (trident->spdif_bits >> 24) & 0xff;
2393 	spin_unlock_irq(&trident->reg_lock);
2394 	return 0;
2395 }
2396 
2397 static int snd_trident_spdif_default_put(struct snd_kcontrol *kcontrol,
2398 					 struct snd_ctl_elem_value *ucontrol)
2399 {
2400 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2401 	unsigned int val;
2402 	int change;
2403 
2404 	val = (ucontrol->value.iec958.status[0] << 0) |
2405 	      (ucontrol->value.iec958.status[1] << 8) |
2406 	      (ucontrol->value.iec958.status[2] << 16) |
2407 	      (ucontrol->value.iec958.status[3] << 24);
2408 	spin_lock_irq(&trident->reg_lock);
2409 	change = trident->spdif_bits != val;
2410 	trident->spdif_bits = val;
2411 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2412 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0)
2413 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2414 	} else {
2415 		if (trident->spdif == NULL)
2416 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2417 	}
2418 	spin_unlock_irq(&trident->reg_lock);
2419 	return change;
2420 }
2421 
2422 static struct snd_kcontrol_new snd_trident_spdif_default =
2423 {
2424 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2425 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2426 	.info =		snd_trident_spdif_default_info,
2427 	.get =		snd_trident_spdif_default_get,
2428 	.put =		snd_trident_spdif_default_put
2429 };
2430 
2431 /*---------------------------------------------------------------------------
2432     snd_trident_spdif_mask
2433 
2434     Description: put/get the S/PDIF mask
2435   ---------------------------------------------------------------------------*/
2436 
2437 static int snd_trident_spdif_mask_info(struct snd_kcontrol *kcontrol,
2438 				       struct snd_ctl_elem_info *uinfo)
2439 {
2440 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2441 	uinfo->count = 1;
2442 	return 0;
2443 }
2444 
2445 static int snd_trident_spdif_mask_get(struct snd_kcontrol *kcontrol,
2446 				      struct snd_ctl_elem_value *ucontrol)
2447 {
2448 	ucontrol->value.iec958.status[0] = 0xff;
2449 	ucontrol->value.iec958.status[1] = 0xff;
2450 	ucontrol->value.iec958.status[2] = 0xff;
2451 	ucontrol->value.iec958.status[3] = 0xff;
2452 	return 0;
2453 }
2454 
2455 static struct snd_kcontrol_new snd_trident_spdif_mask =
2456 {
2457 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2458 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2459 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
2460 	.info =		snd_trident_spdif_mask_info,
2461 	.get =		snd_trident_spdif_mask_get,
2462 };
2463 
2464 /*---------------------------------------------------------------------------
2465     snd_trident_spdif_stream
2466 
2467     Description: put/get the S/PDIF stream settings
2468   ---------------------------------------------------------------------------*/
2469 
2470 static int snd_trident_spdif_stream_info(struct snd_kcontrol *kcontrol,
2471 					 struct snd_ctl_elem_info *uinfo)
2472 {
2473 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2474 	uinfo->count = 1;
2475 	return 0;
2476 }
2477 
2478 static int snd_trident_spdif_stream_get(struct snd_kcontrol *kcontrol,
2479 					struct snd_ctl_elem_value *ucontrol)
2480 {
2481 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2482 
2483 	spin_lock_irq(&trident->reg_lock);
2484 	ucontrol->value.iec958.status[0] = (trident->spdif_pcm_bits >> 0) & 0xff;
2485 	ucontrol->value.iec958.status[1] = (trident->spdif_pcm_bits >> 8) & 0xff;
2486 	ucontrol->value.iec958.status[2] = (trident->spdif_pcm_bits >> 16) & 0xff;
2487 	ucontrol->value.iec958.status[3] = (trident->spdif_pcm_bits >> 24) & 0xff;
2488 	spin_unlock_irq(&trident->reg_lock);
2489 	return 0;
2490 }
2491 
2492 static int snd_trident_spdif_stream_put(struct snd_kcontrol *kcontrol,
2493 					struct snd_ctl_elem_value *ucontrol)
2494 {
2495 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2496 	unsigned int val;
2497 	int change;
2498 
2499 	val = (ucontrol->value.iec958.status[0] << 0) |
2500 	      (ucontrol->value.iec958.status[1] << 8) |
2501 	      (ucontrol->value.iec958.status[2] << 16) |
2502 	      (ucontrol->value.iec958.status[3] << 24);
2503 	spin_lock_irq(&trident->reg_lock);
2504 	change = trident->spdif_pcm_bits != val;
2505 	trident->spdif_pcm_bits = val;
2506 	if (trident->spdif != NULL) {
2507 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2508 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
2509 		} else {
2510 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2511 		}
2512 	}
2513 	spin_unlock_irq(&trident->reg_lock);
2514 	return change;
2515 }
2516 
2517 static struct snd_kcontrol_new snd_trident_spdif_stream =
2518 {
2519 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2520 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2521 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2522 	.info =		snd_trident_spdif_stream_info,
2523 	.get =		snd_trident_spdif_stream_get,
2524 	.put =		snd_trident_spdif_stream_put
2525 };
2526 
2527 /*---------------------------------------------------------------------------
2528     snd_trident_ac97_control
2529 
2530     Description: enable/disable rear path for ac97
2531   ---------------------------------------------------------------------------*/
2532 
2533 #define snd_trident_ac97_control_info	snd_ctl_boolean_mono_info
2534 
2535 static int snd_trident_ac97_control_get(struct snd_kcontrol *kcontrol,
2536 					struct snd_ctl_elem_value *ucontrol)
2537 {
2538 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2539 	unsigned char val;
2540 
2541 	spin_lock_irq(&trident->reg_lock);
2542 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2543 	ucontrol->value.integer.value[0] = (val & (1 << kcontrol->private_value)) ? 1 : 0;
2544 	spin_unlock_irq(&trident->reg_lock);
2545 	return 0;
2546 }
2547 
2548 static int snd_trident_ac97_control_put(struct snd_kcontrol *kcontrol,
2549 					struct snd_ctl_elem_value *ucontrol)
2550 {
2551 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2552 	unsigned char val;
2553 	int change = 0;
2554 
2555 	spin_lock_irq(&trident->reg_lock);
2556 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2557 	val &= ~(1 << kcontrol->private_value);
2558 	if (ucontrol->value.integer.value[0])
2559 		val |= 1 << kcontrol->private_value;
2560 	change = val != trident->ac97_ctrl;
2561 	trident->ac97_ctrl = val;
2562 	outl(trident->ac97_ctrl = val, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2563 	spin_unlock_irq(&trident->reg_lock);
2564 	return change;
2565 }
2566 
2567 static struct snd_kcontrol_new snd_trident_ac97_rear_control =
2568 {
2569 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2570 	.name =         "Rear Path",
2571 	.info =		snd_trident_ac97_control_info,
2572 	.get =		snd_trident_ac97_control_get,
2573 	.put =		snd_trident_ac97_control_put,
2574 	.private_value = 4,
2575 };
2576 
2577 /*---------------------------------------------------------------------------
2578     snd_trident_vol_control
2579 
2580     Description: wave & music volume control
2581   ---------------------------------------------------------------------------*/
2582 
2583 static int snd_trident_vol_control_info(struct snd_kcontrol *kcontrol,
2584 					struct snd_ctl_elem_info *uinfo)
2585 {
2586 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2587 	uinfo->count = 2;
2588 	uinfo->value.integer.min = 0;
2589 	uinfo->value.integer.max = 255;
2590 	return 0;
2591 }
2592 
2593 static int snd_trident_vol_control_get(struct snd_kcontrol *kcontrol,
2594 				       struct snd_ctl_elem_value *ucontrol)
2595 {
2596 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2597 	unsigned int val;
2598 
2599 	val = trident->musicvol_wavevol;
2600 	ucontrol->value.integer.value[0] = 255 - ((val >> kcontrol->private_value) & 0xff);
2601 	ucontrol->value.integer.value[1] = 255 - ((val >> (kcontrol->private_value + 8)) & 0xff);
2602 	return 0;
2603 }
2604 
2605 static const DECLARE_TLV_DB_SCALE(db_scale_gvol, -6375, 25, 0);
2606 
2607 static int snd_trident_vol_control_put(struct snd_kcontrol *kcontrol,
2608 				       struct snd_ctl_elem_value *ucontrol)
2609 {
2610 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2611 	unsigned int val;
2612 	int change = 0;
2613 
2614 	spin_lock_irq(&trident->reg_lock);
2615 	val = trident->musicvol_wavevol;
2616 	val &= ~(0xffff << kcontrol->private_value);
2617 	val |= ((255 - (ucontrol->value.integer.value[0] & 0xff)) |
2618 	        ((255 - (ucontrol->value.integer.value[1] & 0xff)) << 8)) << kcontrol->private_value;
2619 	change = val != trident->musicvol_wavevol;
2620 	outl(trident->musicvol_wavevol = val, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2621 	spin_unlock_irq(&trident->reg_lock);
2622 	return change;
2623 }
2624 
2625 static struct snd_kcontrol_new snd_trident_vol_music_control =
2626 {
2627 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2628 	.name =         "Music Playback Volume",
2629 	.info =		snd_trident_vol_control_info,
2630 	.get =		snd_trident_vol_control_get,
2631 	.put =		snd_trident_vol_control_put,
2632 	.private_value = 16,
2633 	.tlv = { .p = db_scale_gvol },
2634 };
2635 
2636 static struct snd_kcontrol_new snd_trident_vol_wave_control =
2637 {
2638 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2639 	.name =         "Wave Playback Volume",
2640 	.info =		snd_trident_vol_control_info,
2641 	.get =		snd_trident_vol_control_get,
2642 	.put =		snd_trident_vol_control_put,
2643 	.private_value = 0,
2644 	.tlv = { .p = db_scale_gvol },
2645 };
2646 
2647 /*---------------------------------------------------------------------------
2648     snd_trident_pcm_vol_control
2649 
2650     Description: PCM front volume control
2651   ---------------------------------------------------------------------------*/
2652 
2653 static int snd_trident_pcm_vol_control_info(struct snd_kcontrol *kcontrol,
2654 					    struct snd_ctl_elem_info *uinfo)
2655 {
2656 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2657 
2658 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2659 	uinfo->count = 1;
2660 	uinfo->value.integer.min = 0;
2661 	uinfo->value.integer.max = 255;
2662 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
2663 		uinfo->value.integer.max = 1023;
2664 	return 0;
2665 }
2666 
2667 static int snd_trident_pcm_vol_control_get(struct snd_kcontrol *kcontrol,
2668 					   struct snd_ctl_elem_value *ucontrol)
2669 {
2670 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2671 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2672 
2673 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2674 		ucontrol->value.integer.value[0] = 1023 - mix->vol;
2675 	} else {
2676 		ucontrol->value.integer.value[0] = 255 - (mix->vol>>2);
2677 	}
2678 	return 0;
2679 }
2680 
2681 static int snd_trident_pcm_vol_control_put(struct snd_kcontrol *kcontrol,
2682 					   struct snd_ctl_elem_value *ucontrol)
2683 {
2684 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2685 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2686 	unsigned int val;
2687 	int change = 0;
2688 
2689 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2690 		val = 1023 - (ucontrol->value.integer.value[0] & 1023);
2691 	} else {
2692 		val = (255 - (ucontrol->value.integer.value[0] & 255)) << 2;
2693 	}
2694 	spin_lock_irq(&trident->reg_lock);
2695 	change = val != mix->vol;
2696 	mix->vol = val;
2697 	if (mix->voice != NULL)
2698 		snd_trident_write_vol_reg(trident, mix->voice, val);
2699 	spin_unlock_irq(&trident->reg_lock);
2700 	return change;
2701 }
2702 
2703 static struct snd_kcontrol_new snd_trident_pcm_vol_control =
2704 {
2705 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2706 	.name =         "PCM Front Playback Volume",
2707 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2708 	.count =	32,
2709 	.info =		snd_trident_pcm_vol_control_info,
2710 	.get =		snd_trident_pcm_vol_control_get,
2711 	.put =		snd_trident_pcm_vol_control_put,
2712 	/* FIXME: no tlv yet */
2713 };
2714 
2715 /*---------------------------------------------------------------------------
2716     snd_trident_pcm_pan_control
2717 
2718     Description: PCM front pan control
2719   ---------------------------------------------------------------------------*/
2720 
2721 static int snd_trident_pcm_pan_control_info(struct snd_kcontrol *kcontrol,
2722 					    struct snd_ctl_elem_info *uinfo)
2723 {
2724 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2725 	uinfo->count = 1;
2726 	uinfo->value.integer.min = 0;
2727 	uinfo->value.integer.max = 127;
2728 	return 0;
2729 }
2730 
2731 static int snd_trident_pcm_pan_control_get(struct snd_kcontrol *kcontrol,
2732 					   struct snd_ctl_elem_value *ucontrol)
2733 {
2734 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2735 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2736 
2737 	ucontrol->value.integer.value[0] = mix->pan;
2738 	if (ucontrol->value.integer.value[0] & 0x40) {
2739 		ucontrol->value.integer.value[0] = (0x3f - (ucontrol->value.integer.value[0] & 0x3f));
2740 	} else {
2741 		ucontrol->value.integer.value[0] |= 0x40;
2742 	}
2743 	return 0;
2744 }
2745 
2746 static int snd_trident_pcm_pan_control_put(struct snd_kcontrol *kcontrol,
2747 					   struct snd_ctl_elem_value *ucontrol)
2748 {
2749 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2750 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2751 	unsigned char val;
2752 	int change = 0;
2753 
2754 	if (ucontrol->value.integer.value[0] & 0x40)
2755 		val = ucontrol->value.integer.value[0] & 0x3f;
2756 	else
2757 		val = (0x3f - (ucontrol->value.integer.value[0] & 0x3f)) | 0x40;
2758 	spin_lock_irq(&trident->reg_lock);
2759 	change = val != mix->pan;
2760 	mix->pan = val;
2761 	if (mix->voice != NULL)
2762 		snd_trident_write_pan_reg(trident, mix->voice, val);
2763 	spin_unlock_irq(&trident->reg_lock);
2764 	return change;
2765 }
2766 
2767 static struct snd_kcontrol_new snd_trident_pcm_pan_control =
2768 {
2769 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2770 	.name =         "PCM Pan Playback Control",
2771 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2772 	.count =	32,
2773 	.info =		snd_trident_pcm_pan_control_info,
2774 	.get =		snd_trident_pcm_pan_control_get,
2775 	.put =		snd_trident_pcm_pan_control_put,
2776 };
2777 
2778 /*---------------------------------------------------------------------------
2779     snd_trident_pcm_rvol_control
2780 
2781     Description: PCM reverb volume control
2782   ---------------------------------------------------------------------------*/
2783 
2784 static int snd_trident_pcm_rvol_control_info(struct snd_kcontrol *kcontrol,
2785 					     struct snd_ctl_elem_info *uinfo)
2786 {
2787 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2788 	uinfo->count = 1;
2789 	uinfo->value.integer.min = 0;
2790 	uinfo->value.integer.max = 127;
2791 	return 0;
2792 }
2793 
2794 static int snd_trident_pcm_rvol_control_get(struct snd_kcontrol *kcontrol,
2795 					    struct snd_ctl_elem_value *ucontrol)
2796 {
2797 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2798 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2799 
2800 	ucontrol->value.integer.value[0] = 127 - mix->rvol;
2801 	return 0;
2802 }
2803 
2804 static int snd_trident_pcm_rvol_control_put(struct snd_kcontrol *kcontrol,
2805 					    struct snd_ctl_elem_value *ucontrol)
2806 {
2807 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2808 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2809 	unsigned short val;
2810 	int change = 0;
2811 
2812 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2813 	spin_lock_irq(&trident->reg_lock);
2814 	change = val != mix->rvol;
2815 	mix->rvol = val;
2816 	if (mix->voice != NULL)
2817 		snd_trident_write_rvol_reg(trident, mix->voice, val);
2818 	spin_unlock_irq(&trident->reg_lock);
2819 	return change;
2820 }
2821 
2822 static const DECLARE_TLV_DB_SCALE(db_scale_crvol, -3175, 25, 1);
2823 
2824 static struct snd_kcontrol_new snd_trident_pcm_rvol_control =
2825 {
2826 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2827 	.name =         "PCM Reverb Playback Volume",
2828 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2829 	.count = 	32,
2830 	.info =		snd_trident_pcm_rvol_control_info,
2831 	.get =		snd_trident_pcm_rvol_control_get,
2832 	.put =		snd_trident_pcm_rvol_control_put,
2833 	.tlv = { .p = db_scale_crvol },
2834 };
2835 
2836 /*---------------------------------------------------------------------------
2837     snd_trident_pcm_cvol_control
2838 
2839     Description: PCM chorus volume control
2840   ---------------------------------------------------------------------------*/
2841 
2842 static int snd_trident_pcm_cvol_control_info(struct snd_kcontrol *kcontrol,
2843 					     struct snd_ctl_elem_info *uinfo)
2844 {
2845 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2846 	uinfo->count = 1;
2847 	uinfo->value.integer.min = 0;
2848 	uinfo->value.integer.max = 127;
2849 	return 0;
2850 }
2851 
2852 static int snd_trident_pcm_cvol_control_get(struct snd_kcontrol *kcontrol,
2853 					    struct snd_ctl_elem_value *ucontrol)
2854 {
2855 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2856 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2857 
2858 	ucontrol->value.integer.value[0] = 127 - mix->cvol;
2859 	return 0;
2860 }
2861 
2862 static int snd_trident_pcm_cvol_control_put(struct snd_kcontrol *kcontrol,
2863 					    struct snd_ctl_elem_value *ucontrol)
2864 {
2865 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2866 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2867 	unsigned short val;
2868 	int change = 0;
2869 
2870 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2871 	spin_lock_irq(&trident->reg_lock);
2872 	change = val != mix->cvol;
2873 	mix->cvol = val;
2874 	if (mix->voice != NULL)
2875 		snd_trident_write_cvol_reg(trident, mix->voice, val);
2876 	spin_unlock_irq(&trident->reg_lock);
2877 	return change;
2878 }
2879 
2880 static struct snd_kcontrol_new snd_trident_pcm_cvol_control =
2881 {
2882 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2883 	.name =         "PCM Chorus Playback Volume",
2884 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2885 	.count =	32,
2886 	.info =		snd_trident_pcm_cvol_control_info,
2887 	.get =		snd_trident_pcm_cvol_control_get,
2888 	.put =		snd_trident_pcm_cvol_control_put,
2889 	.tlv = { .p = db_scale_crvol },
2890 };
2891 
2892 static void snd_trident_notify_pcm_change1(struct snd_card *card,
2893 					   struct snd_kcontrol *kctl,
2894 					   int num, int activate)
2895 {
2896 	struct snd_ctl_elem_id id;
2897 
2898 	if (! kctl)
2899 		return;
2900 	if (activate)
2901 		kctl->vd[num].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2902 	else
2903 		kctl->vd[num].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2904 	snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
2905 		       SNDRV_CTL_EVENT_MASK_INFO,
2906 		       snd_ctl_build_ioff(&id, kctl, num));
2907 }
2908 
2909 static void snd_trident_notify_pcm_change(struct snd_trident *trident,
2910 					  struct snd_trident_pcm_mixer *tmix,
2911 					  int num, int activate)
2912 {
2913 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_vol, num, activate);
2914 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_pan, num, activate);
2915 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_rvol, num, activate);
2916 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_cvol, num, activate);
2917 }
2918 
2919 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
2920 				       struct snd_trident_voice *voice,
2921 				       struct snd_pcm_substream *substream)
2922 {
2923 	struct snd_trident_pcm_mixer *tmix;
2924 
2925 	if (snd_BUG_ON(!trident || !voice || !substream))
2926 		return -EINVAL;
2927 	tmix = &trident->pcm_mixer[substream->number];
2928 	tmix->voice = voice;
2929 	tmix->vol = T4D_DEFAULT_PCM_VOL;
2930 	tmix->pan = T4D_DEFAULT_PCM_PAN;
2931 	tmix->rvol = T4D_DEFAULT_PCM_RVOL;
2932 	tmix->cvol = T4D_DEFAULT_PCM_CVOL;
2933 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 1);
2934 	return 0;
2935 }
2936 
2937 static int snd_trident_pcm_mixer_free(struct snd_trident *trident, struct snd_trident_voice *voice, struct snd_pcm_substream *substream)
2938 {
2939 	struct snd_trident_pcm_mixer *tmix;
2940 
2941 	if (snd_BUG_ON(!trident || !substream))
2942 		return -EINVAL;
2943 	tmix = &trident->pcm_mixer[substream->number];
2944 	tmix->voice = NULL;
2945 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 0);
2946 	return 0;
2947 }
2948 
2949 /*---------------------------------------------------------------------------
2950    snd_trident_mixer
2951 
2952    Description: This routine registers the 4DWave device for mixer support.
2953 
2954    Parameters:  trident - pointer to target device class for 4DWave.
2955 
2956    Returns:     None
2957 
2958   ---------------------------------------------------------------------------*/
2959 
2960 static int snd_trident_mixer(struct snd_trident *trident, int pcm_spdif_device)
2961 {
2962 	struct snd_ac97_template _ac97;
2963 	struct snd_card *card = trident->card;
2964 	struct snd_kcontrol *kctl;
2965 	struct snd_ctl_elem_value *uctl;
2966 	int idx, err, retries = 2;
2967 	static struct snd_ac97_bus_ops ops = {
2968 		.write = snd_trident_codec_write,
2969 		.read = snd_trident_codec_read,
2970 	};
2971 
2972 	uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
2973 	if (!uctl)
2974 		return -ENOMEM;
2975 
2976 	if ((err = snd_ac97_bus(trident->card, 0, &ops, NULL, &trident->ac97_bus)) < 0)
2977 		goto __out;
2978 
2979 	memset(&_ac97, 0, sizeof(_ac97));
2980 	_ac97.private_data = trident;
2981 	trident->ac97_detect = 1;
2982 
2983       __again:
2984 	if ((err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97)) < 0) {
2985 		if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2986 			if ((err = snd_trident_sis_reset(trident)) < 0)
2987 				goto __out;
2988 			if (retries-- > 0)
2989 				goto __again;
2990 			err = -EIO;
2991 		}
2992 		goto __out;
2993 	}
2994 
2995 	/* secondary codec? */
2996 	if (trident->device == TRIDENT_DEVICE_ID_SI7018 &&
2997 	    (inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0) {
2998 		_ac97.num = 1;
2999 		err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97_sec);
3000 		if (err < 0)
3001 			dev_err(trident->card->dev,
3002 				"SI7018: the secondary codec - invalid access\n");
3003 #if 0	// only for my testing purpose --jk
3004 		{
3005 			struct snd_ac97 *mc97;
3006 			err = snd_ac97_modem(trident->card, &_ac97, &mc97);
3007 			if (err < 0)
3008 				dev_err(trident->card->dev,
3009 					"snd_ac97_modem returned error %i\n", err);
3010 		}
3011 #endif
3012 	}
3013 
3014 	trident->ac97_detect = 0;
3015 
3016 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
3017 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_wave_control, trident))) < 0)
3018 			goto __out;
3019 		kctl->put(kctl, uctl);
3020 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_music_control, trident))) < 0)
3021 			goto __out;
3022 		kctl->put(kctl, uctl);
3023 		outl(trident->musicvol_wavevol = 0x00000000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3024 	} else {
3025 		outl(trident->musicvol_wavevol = 0xffff0000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3026 	}
3027 
3028 	for (idx = 0; idx < 32; idx++) {
3029 		struct snd_trident_pcm_mixer *tmix;
3030 
3031 		tmix = &trident->pcm_mixer[idx];
3032 		tmix->voice = NULL;
3033 	}
3034 	if ((trident->ctl_vol = snd_ctl_new1(&snd_trident_pcm_vol_control, trident)) == NULL)
3035 		goto __nomem;
3036 	if ((err = snd_ctl_add(card, trident->ctl_vol)))
3037 		goto __out;
3038 
3039 	if ((trident->ctl_pan = snd_ctl_new1(&snd_trident_pcm_pan_control, trident)) == NULL)
3040 		goto __nomem;
3041 	if ((err = snd_ctl_add(card, trident->ctl_pan)))
3042 		goto __out;
3043 
3044 	if ((trident->ctl_rvol = snd_ctl_new1(&snd_trident_pcm_rvol_control, trident)) == NULL)
3045 		goto __nomem;
3046 	if ((err = snd_ctl_add(card, trident->ctl_rvol)))
3047 		goto __out;
3048 
3049 	if ((trident->ctl_cvol = snd_ctl_new1(&snd_trident_pcm_cvol_control, trident)) == NULL)
3050 		goto __nomem;
3051 	if ((err = snd_ctl_add(card, trident->ctl_cvol)))
3052 		goto __out;
3053 
3054 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3055 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_ac97_rear_control, trident))) < 0)
3056 			goto __out;
3057 		kctl->put(kctl, uctl);
3058 	}
3059 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018) {
3060 
3061 		kctl = snd_ctl_new1(&snd_trident_spdif_control, trident);
3062 		if (kctl == NULL) {
3063 			err = -ENOMEM;
3064 			goto __out;
3065 		}
3066 		if (trident->ac97->ext_id & AC97_EI_SPDIF)
3067 			kctl->id.index++;
3068 		if (trident->ac97_sec && (trident->ac97_sec->ext_id & AC97_EI_SPDIF))
3069 			kctl->id.index++;
3070 		idx = kctl->id.index;
3071 		if ((err = snd_ctl_add(card, kctl)) < 0)
3072 			goto __out;
3073 		kctl->put(kctl, uctl);
3074 
3075 		kctl = snd_ctl_new1(&snd_trident_spdif_default, trident);
3076 		if (kctl == NULL) {
3077 			err = -ENOMEM;
3078 			goto __out;
3079 		}
3080 		kctl->id.index = idx;
3081 		kctl->id.device = pcm_spdif_device;
3082 		if ((err = snd_ctl_add(card, kctl)) < 0)
3083 			goto __out;
3084 
3085 		kctl = snd_ctl_new1(&snd_trident_spdif_mask, trident);
3086 		if (kctl == NULL) {
3087 			err = -ENOMEM;
3088 			goto __out;
3089 		}
3090 		kctl->id.index = idx;
3091 		kctl->id.device = pcm_spdif_device;
3092 		if ((err = snd_ctl_add(card, kctl)) < 0)
3093 			goto __out;
3094 
3095 		kctl = snd_ctl_new1(&snd_trident_spdif_stream, trident);
3096 		if (kctl == NULL) {
3097 			err = -ENOMEM;
3098 			goto __out;
3099 		}
3100 		kctl->id.index = idx;
3101 		kctl->id.device = pcm_spdif_device;
3102 		if ((err = snd_ctl_add(card, kctl)) < 0)
3103 			goto __out;
3104 		trident->spdif_pcm_ctl = kctl;
3105 	}
3106 
3107 	err = 0;
3108 	goto __out;
3109 
3110  __nomem:
3111 	err = -ENOMEM;
3112 
3113  __out:
3114 	kfree(uctl);
3115 
3116 	return err;
3117 }
3118 
3119 /*
3120  * gameport interface
3121  */
3122 
3123 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
3124 
3125 static unsigned char snd_trident_gameport_read(struct gameport *gameport)
3126 {
3127 	struct snd_trident *chip = gameport_get_port_data(gameport);
3128 
3129 	if (snd_BUG_ON(!chip))
3130 		return 0;
3131 	return inb(TRID_REG(chip, GAMEPORT_LEGACY));
3132 }
3133 
3134 static void snd_trident_gameport_trigger(struct gameport *gameport)
3135 {
3136 	struct snd_trident *chip = gameport_get_port_data(gameport);
3137 
3138 	if (snd_BUG_ON(!chip))
3139 		return;
3140 	outb(0xff, TRID_REG(chip, GAMEPORT_LEGACY));
3141 }
3142 
3143 static int snd_trident_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
3144 {
3145 	struct snd_trident *chip = gameport_get_port_data(gameport);
3146 	int i;
3147 
3148 	if (snd_BUG_ON(!chip))
3149 		return 0;
3150 
3151 	*buttons = (~inb(TRID_REG(chip, GAMEPORT_LEGACY)) >> 4) & 0xf;
3152 
3153 	for (i = 0; i < 4; i++) {
3154 		axes[i] = inw(TRID_REG(chip, GAMEPORT_AXES + i * 2));
3155 		if (axes[i] == 0xffff) axes[i] = -1;
3156 	}
3157 
3158         return 0;
3159 }
3160 
3161 static int snd_trident_gameport_open(struct gameport *gameport, int mode)
3162 {
3163 	struct snd_trident *chip = gameport_get_port_data(gameport);
3164 
3165 	if (snd_BUG_ON(!chip))
3166 		return 0;
3167 
3168 	switch (mode) {
3169 		case GAMEPORT_MODE_COOKED:
3170 			outb(GAMEPORT_MODE_ADC, TRID_REG(chip, GAMEPORT_GCR));
3171 			msleep(20);
3172 			return 0;
3173 		case GAMEPORT_MODE_RAW:
3174 			outb(0, TRID_REG(chip, GAMEPORT_GCR));
3175 			return 0;
3176 		default:
3177 			return -1;
3178 	}
3179 }
3180 
3181 int snd_trident_create_gameport(struct snd_trident *chip)
3182 {
3183 	struct gameport *gp;
3184 
3185 	chip->gameport = gp = gameport_allocate_port();
3186 	if (!gp) {
3187 		dev_err(chip->card->dev,
3188 			"cannot allocate memory for gameport\n");
3189 		return -ENOMEM;
3190 	}
3191 
3192 	gameport_set_name(gp, "Trident 4DWave");
3193 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
3194 	gameport_set_dev_parent(gp, &chip->pci->dev);
3195 
3196 	gameport_set_port_data(gp, chip);
3197 	gp->fuzz = 64;
3198 	gp->read = snd_trident_gameport_read;
3199 	gp->trigger = snd_trident_gameport_trigger;
3200 	gp->cooked_read = snd_trident_gameport_cooked_read;
3201 	gp->open = snd_trident_gameport_open;
3202 
3203 	gameport_register_port(gp);
3204 
3205 	return 0;
3206 }
3207 
3208 static inline void snd_trident_free_gameport(struct snd_trident *chip)
3209 {
3210 	if (chip->gameport) {
3211 		gameport_unregister_port(chip->gameport);
3212 		chip->gameport = NULL;
3213 	}
3214 }
3215 #else
3216 int snd_trident_create_gameport(struct snd_trident *chip) { return -ENOSYS; }
3217 static inline void snd_trident_free_gameport(struct snd_trident *chip) { }
3218 #endif /* CONFIG_GAMEPORT */
3219 
3220 /*
3221  * delay for 1 tick
3222  */
3223 static inline void do_delay(struct snd_trident *chip)
3224 {
3225 	schedule_timeout_uninterruptible(1);
3226 }
3227 
3228 /*
3229  *  SiS reset routine
3230  */
3231 
3232 static int snd_trident_sis_reset(struct snd_trident *trident)
3233 {
3234 	unsigned long end_time;
3235 	unsigned int i;
3236 	int r;
3237 
3238 	r = trident->in_suspend ? 0 : 2;	/* count of retries */
3239       __si7018_retry:
3240 	pci_write_config_byte(trident->pci, 0x46, 0x04);	/* SOFTWARE RESET */
3241 	udelay(100);
3242 	pci_write_config_byte(trident->pci, 0x46, 0x00);
3243 	udelay(100);
3244 	/* disable AC97 GPIO interrupt */
3245 	outb(0x00, TRID_REG(trident, SI_AC97_GPIO));
3246 	/* initialize serial interface, force cold reset */
3247 	i = PCMOUT|SURROUT|CENTEROUT|LFEOUT|SECONDARY_ID|COLD_RESET;
3248 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3249 	udelay(1000);
3250 	/* remove cold reset */
3251 	i &= ~COLD_RESET;
3252 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3253 	udelay(2000);
3254 	/* wait, until the codec is ready */
3255 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3256 	do {
3257 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0)
3258 			goto __si7018_ok;
3259 		do_delay(trident);
3260 	} while (time_after_eq(end_time, jiffies));
3261 	dev_err(trident->card->dev, "AC'97 codec ready error [0x%x]\n",
3262 		inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)));
3263 	if (r-- > 0) {
3264 		end_time = jiffies + HZ;
3265 		do {
3266 			do_delay(trident);
3267 		} while (time_after_eq(end_time, jiffies));
3268 		goto __si7018_retry;
3269 	}
3270       __si7018_ok:
3271 	/* wait for the second codec */
3272 	do {
3273 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_SECONDARY_READY) != 0)
3274 			break;
3275 		do_delay(trident);
3276 	} while (time_after_eq(end_time, jiffies));
3277 	/* enable 64 channel mode */
3278 	outl(BANK_B_EN, TRID_REG(trident, T4D_LFO_GC_CIR));
3279 	return 0;
3280 }
3281 
3282 /*
3283  *  /proc interface
3284  */
3285 
3286 static void snd_trident_proc_read(struct snd_info_entry *entry,
3287 				  struct snd_info_buffer *buffer)
3288 {
3289 	struct snd_trident *trident = entry->private_data;
3290 	char *s;
3291 
3292 	switch (trident->device) {
3293 	case TRIDENT_DEVICE_ID_SI7018:
3294 		s = "SiS 7018 Audio";
3295 		break;
3296 	case TRIDENT_DEVICE_ID_DX:
3297 		s = "Trident 4DWave PCI DX";
3298 		break;
3299 	case TRIDENT_DEVICE_ID_NX:
3300 		s = "Trident 4DWave PCI NX";
3301 		break;
3302 	default:
3303 		s = "???";
3304 	}
3305 	snd_iprintf(buffer, "%s\n\n", s);
3306 	snd_iprintf(buffer, "Spurious IRQs    : %d\n", trident->spurious_irq_count);
3307 	snd_iprintf(buffer, "Spurious IRQ dlta: %d\n", trident->spurious_irq_max_delta);
3308 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018)
3309 		snd_iprintf(buffer, "IEC958 Mixer Out : %s\n", trident->spdif_ctrl == 0x28 ? "on" : "off");
3310 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3311 		snd_iprintf(buffer, "Rear Speakers    : %s\n", trident->ac97_ctrl & 0x00000010 ? "on" : "off");
3312 		if (trident->tlb.entries) {
3313 			snd_iprintf(buffer,"\nVirtual Memory\n");
3314 			snd_iprintf(buffer, "Memory Maximum : %d\n", trident->tlb.memhdr->size);
3315 			snd_iprintf(buffer, "Memory Used    : %d\n", trident->tlb.memhdr->used);
3316 			snd_iprintf(buffer, "Memory Free    : %d\n", snd_util_mem_avail(trident->tlb.memhdr));
3317 		}
3318 	}
3319 }
3320 
3321 static void snd_trident_proc_init(struct snd_trident *trident)
3322 {
3323 	struct snd_info_entry *entry;
3324 	const char *s = "trident";
3325 
3326 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
3327 		s = "sis7018";
3328 	if (! snd_card_proc_new(trident->card, s, &entry))
3329 		snd_info_set_text_ops(entry, trident, snd_trident_proc_read);
3330 }
3331 
3332 static int snd_trident_dev_free(struct snd_device *device)
3333 {
3334 	struct snd_trident *trident = device->device_data;
3335 	return snd_trident_free(trident);
3336 }
3337 
3338 /*---------------------------------------------------------------------------
3339    snd_trident_tlb_alloc
3340 
3341    Description: Allocate and set up the TLB page table on 4D NX.
3342 		Each entry has 4 bytes (physical PCI address).
3343 
3344    Parameters:  trident - pointer to target device class for 4DWave.
3345 
3346    Returns:     0 or negative error code
3347 
3348   ---------------------------------------------------------------------------*/
3349 
3350 static int snd_trident_tlb_alloc(struct snd_trident *trident)
3351 {
3352 	int i;
3353 
3354 	/* TLB array must be aligned to 16kB !!! so we allocate
3355 	   32kB region and correct offset when necessary */
3356 
3357 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3358 				2 * SNDRV_TRIDENT_MAX_PAGES * 4, &trident->tlb.buffer) < 0) {
3359 		dev_err(trident->card->dev, "unable to allocate TLB buffer\n");
3360 		return -ENOMEM;
3361 	}
3362 	trident->tlb.entries = (unsigned int*)ALIGN((unsigned long)trident->tlb.buffer.area, SNDRV_TRIDENT_MAX_PAGES * 4);
3363 	trident->tlb.entries_dmaaddr = ALIGN(trident->tlb.buffer.addr, SNDRV_TRIDENT_MAX_PAGES * 4);
3364 	/* allocate shadow TLB page table (virtual addresses) */
3365 	trident->tlb.shadow_entries = vmalloc(SNDRV_TRIDENT_MAX_PAGES*sizeof(unsigned long));
3366 	if (trident->tlb.shadow_entries == NULL) {
3367 		dev_err(trident->card->dev,
3368 			"unable to allocate shadow TLB entries\n");
3369 		return -ENOMEM;
3370 	}
3371 	/* allocate and setup silent page and initialise TLB entries */
3372 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3373 				SNDRV_TRIDENT_PAGE_SIZE, &trident->tlb.silent_page) < 0) {
3374 		dev_err(trident->card->dev, "unable to allocate silent page\n");
3375 		return -ENOMEM;
3376 	}
3377 	memset(trident->tlb.silent_page.area, 0, SNDRV_TRIDENT_PAGE_SIZE);
3378 	for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) {
3379 		trident->tlb.entries[i] = cpu_to_le32(trident->tlb.silent_page.addr & ~(SNDRV_TRIDENT_PAGE_SIZE-1));
3380 		trident->tlb.shadow_entries[i] = (unsigned long)trident->tlb.silent_page.area;
3381 	}
3382 
3383 	/* use emu memory block manager code to manage tlb page allocation */
3384 	trident->tlb.memhdr = snd_util_memhdr_new(SNDRV_TRIDENT_PAGE_SIZE * SNDRV_TRIDENT_MAX_PAGES);
3385 	if (trident->tlb.memhdr == NULL)
3386 		return -ENOMEM;
3387 
3388 	trident->tlb.memhdr->block_extra_size = sizeof(struct snd_trident_memblk_arg);
3389 	return 0;
3390 }
3391 
3392 /*
3393  * initialize 4D DX chip
3394  */
3395 
3396 static void snd_trident_stop_all_voices(struct snd_trident *trident)
3397 {
3398 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_A));
3399 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_B));
3400 	outl(0, TRID_REG(trident, T4D_AINTEN_A));
3401 	outl(0, TRID_REG(trident, T4D_AINTEN_B));
3402 }
3403 
3404 static int snd_trident_4d_dx_init(struct snd_trident *trident)
3405 {
3406 	struct pci_dev *pci = trident->pci;
3407 	unsigned long end_time;
3408 
3409 	/* reset the legacy configuration and whole audio/wavetable block */
3410 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3411 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3412 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3413 	pci_write_config_byte(pci, 0x46, 4); /* reset */
3414 	udelay(100);
3415 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3416 	udelay(100);
3417 
3418 	/* warm reset of the AC'97 codec */
3419 	outl(0x00000001, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3420 	udelay(100);
3421 	outl(0x00000000, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3422 	/* DAC on, disable SB IRQ and try to force ADC valid signal */
3423 	trident->ac97_ctrl = 0x0000004a;
3424 	outl(trident->ac97_ctrl, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3425 	/* wait, until the codec is ready */
3426 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3427 	do {
3428 		if ((inl(TRID_REG(trident, DX_ACR2_AC97_COM_STAT)) & 0x0010) != 0)
3429 			goto __dx_ok;
3430 		do_delay(trident);
3431 	} while (time_after_eq(end_time, jiffies));
3432 	dev_err(trident->card->dev, "AC'97 codec ready error\n");
3433 	return -EIO;
3434 
3435  __dx_ok:
3436 	snd_trident_stop_all_voices(trident);
3437 
3438 	return 0;
3439 }
3440 
3441 /*
3442  * initialize 4D NX chip
3443  */
3444 static int snd_trident_4d_nx_init(struct snd_trident *trident)
3445 {
3446 	struct pci_dev *pci = trident->pci;
3447 	unsigned long end_time;
3448 
3449 	/* reset the legacy configuration and whole audio/wavetable block */
3450 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3451 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3452 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3453 
3454 	pci_write_config_byte(pci, 0x46, 1); /* reset */
3455 	udelay(100);
3456 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3457 	udelay(100);
3458 
3459 	/* warm reset of the AC'97 codec */
3460 	outl(0x00000001, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3461 	udelay(100);
3462 	outl(0x00000000, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3463 	/* wait, until the codec is ready */
3464 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3465 	do {
3466 		if ((inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)) & 0x0008) != 0)
3467 			goto __nx_ok;
3468 		do_delay(trident);
3469 	} while (time_after_eq(end_time, jiffies));
3470 	dev_err(trident->card->dev, "AC'97 codec ready error [0x%x]\n",
3471 		inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)));
3472 	return -EIO;
3473 
3474  __nx_ok:
3475 	/* DAC on */
3476 	trident->ac97_ctrl = 0x00000002;
3477 	outl(trident->ac97_ctrl, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3478 	/* disable SB IRQ */
3479 	outl(NX_SB_IRQ_DISABLE, TRID_REG(trident, T4D_MISCINT));
3480 
3481 	snd_trident_stop_all_voices(trident);
3482 
3483 	if (trident->tlb.entries != NULL) {
3484 		unsigned int i;
3485 		/* enable virtual addressing via TLB */
3486 		i = trident->tlb.entries_dmaaddr;
3487 		i |= 0x00000001;
3488 		outl(i, TRID_REG(trident, NX_TLBC));
3489 	} else {
3490 		outl(0, TRID_REG(trident, NX_TLBC));
3491 	}
3492 	/* initialize S/PDIF */
3493 	outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
3494 	outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3495 
3496 	return 0;
3497 }
3498 
3499 /*
3500  * initialize sis7018 chip
3501  */
3502 static int snd_trident_sis_init(struct snd_trident *trident)
3503 {
3504 	int err;
3505 
3506 	if ((err = snd_trident_sis_reset(trident)) < 0)
3507 		return err;
3508 
3509 	snd_trident_stop_all_voices(trident);
3510 
3511 	/* initialize S/PDIF */
3512 	outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
3513 
3514 	return 0;
3515 }
3516 
3517 /*---------------------------------------------------------------------------
3518    snd_trident_create
3519 
3520    Description: This routine will create the device specific class for
3521                 the 4DWave card. It will also perform basic initialization.
3522 
3523    Parameters:  card  - which card to create
3524                 pci   - interface to PCI bus resource info
3525                 dma1ptr - playback dma buffer
3526                 dma2ptr - capture dma buffer
3527                 irqptr  -  interrupt resource info
3528 
3529    Returns:     4DWave device class private data
3530 
3531   ---------------------------------------------------------------------------*/
3532 
3533 int snd_trident_create(struct snd_card *card,
3534 		       struct pci_dev *pci,
3535 		       int pcm_streams,
3536 		       int pcm_spdif_device,
3537 		       int max_wavetable_size,
3538 		       struct snd_trident ** rtrident)
3539 {
3540 	struct snd_trident *trident;
3541 	int i, err;
3542 	struct snd_trident_voice *voice;
3543 	struct snd_trident_pcm_mixer *tmix;
3544 	static struct snd_device_ops ops = {
3545 		.dev_free =	snd_trident_dev_free,
3546 	};
3547 
3548 	*rtrident = NULL;
3549 
3550 	/* enable PCI device */
3551 	if ((err = pci_enable_device(pci)) < 0)
3552 		return err;
3553 	/* check, if we can restrict PCI DMA transfers to 30 bits */
3554 	if (dma_set_mask(&pci->dev, DMA_BIT_MASK(30)) < 0 ||
3555 	    dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(30)) < 0) {
3556 		dev_err(card->dev,
3557 			"architecture does not support 30bit PCI busmaster DMA\n");
3558 		pci_disable_device(pci);
3559 		return -ENXIO;
3560 	}
3561 
3562 	trident = kzalloc(sizeof(*trident), GFP_KERNEL);
3563 	if (trident == NULL) {
3564 		pci_disable_device(pci);
3565 		return -ENOMEM;
3566 	}
3567 	trident->device = (pci->vendor << 16) | pci->device;
3568 	trident->card = card;
3569 	trident->pci = pci;
3570 	spin_lock_init(&trident->reg_lock);
3571 	spin_lock_init(&trident->event_lock);
3572 	spin_lock_init(&trident->voice_alloc);
3573 	if (pcm_streams < 1)
3574 		pcm_streams = 1;
3575 	if (pcm_streams > 32)
3576 		pcm_streams = 32;
3577 	trident->ChanPCM = pcm_streams;
3578 	if (max_wavetable_size < 0 )
3579 		max_wavetable_size = 0;
3580 	trident->synth.max_size = max_wavetable_size * 1024;
3581 	trident->irq = -1;
3582 
3583 	trident->midi_port = TRID_REG(trident, T4D_MPU401_BASE);
3584 	pci_set_master(pci);
3585 
3586 	if ((err = pci_request_regions(pci, "Trident Audio")) < 0) {
3587 		kfree(trident);
3588 		pci_disable_device(pci);
3589 		return err;
3590 	}
3591 	trident->port = pci_resource_start(pci, 0);
3592 
3593 	if (request_irq(pci->irq, snd_trident_interrupt, IRQF_SHARED,
3594 			KBUILD_MODNAME, trident)) {
3595 		dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
3596 		snd_trident_free(trident);
3597 		return -EBUSY;
3598 	}
3599 	trident->irq = pci->irq;
3600 
3601 	/* allocate 16k-aligned TLB for NX cards */
3602 	trident->tlb.entries = NULL;
3603 	trident->tlb.buffer.area = NULL;
3604 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3605 		if ((err = snd_trident_tlb_alloc(trident)) < 0) {
3606 			snd_trident_free(trident);
3607 			return err;
3608 		}
3609 	}
3610 
3611 	trident->spdif_bits = trident->spdif_pcm_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
3612 
3613 	/* initialize chip */
3614 	switch (trident->device) {
3615 	case TRIDENT_DEVICE_ID_DX:
3616 		err = snd_trident_4d_dx_init(trident);
3617 		break;
3618 	case TRIDENT_DEVICE_ID_NX:
3619 		err = snd_trident_4d_nx_init(trident);
3620 		break;
3621 	case TRIDENT_DEVICE_ID_SI7018:
3622 		err = snd_trident_sis_init(trident);
3623 		break;
3624 	default:
3625 		snd_BUG();
3626 		break;
3627 	}
3628 	if (err < 0) {
3629 		snd_trident_free(trident);
3630 		return err;
3631 	}
3632 
3633 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, trident, &ops)) < 0) {
3634 		snd_trident_free(trident);
3635 		return err;
3636 	}
3637 
3638 	if ((err = snd_trident_mixer(trident, pcm_spdif_device)) < 0)
3639 		return err;
3640 
3641 	/* initialise synth voices */
3642 	for (i = 0; i < 64; i++) {
3643 		voice = &trident->synth.voices[i];
3644 		voice->number = i;
3645 		voice->trident = trident;
3646 	}
3647 	/* initialize pcm mixer entries */
3648 	for (i = 0; i < 32; i++) {
3649 		tmix = &trident->pcm_mixer[i];
3650 		tmix->vol = T4D_DEFAULT_PCM_VOL;
3651 		tmix->pan = T4D_DEFAULT_PCM_PAN;
3652 		tmix->rvol = T4D_DEFAULT_PCM_RVOL;
3653 		tmix->cvol = T4D_DEFAULT_PCM_CVOL;
3654 	}
3655 
3656 	snd_trident_enable_eso(trident);
3657 
3658 	snd_trident_proc_init(trident);
3659 	*rtrident = trident;
3660 	return 0;
3661 }
3662 
3663 /*---------------------------------------------------------------------------
3664    snd_trident_free
3665 
3666    Description: This routine will free the device specific class for
3667                 the 4DWave card.
3668 
3669    Parameters:  trident  - device specific private data for 4DWave card
3670 
3671    Returns:     None.
3672 
3673   ---------------------------------------------------------------------------*/
3674 
3675 static int snd_trident_free(struct snd_trident *trident)
3676 {
3677 	snd_trident_free_gameport(trident);
3678 	snd_trident_disable_eso(trident);
3679 	// Disable S/PDIF out
3680 	if (trident->device == TRIDENT_DEVICE_ID_NX)
3681 		outb(0x00, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3682 	else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
3683 		outl(0, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3684 	}
3685 	if (trident->irq >= 0)
3686 		free_irq(trident->irq, trident);
3687 	if (trident->tlb.buffer.area) {
3688 		outl(0, TRID_REG(trident, NX_TLBC));
3689 		snd_util_memhdr_free(trident->tlb.memhdr);
3690 		if (trident->tlb.silent_page.area)
3691 			snd_dma_free_pages(&trident->tlb.silent_page);
3692 		vfree(trident->tlb.shadow_entries);
3693 		snd_dma_free_pages(&trident->tlb.buffer);
3694 	}
3695 	pci_release_regions(trident->pci);
3696 	pci_disable_device(trident->pci);
3697 	kfree(trident);
3698 	return 0;
3699 }
3700 
3701 /*---------------------------------------------------------------------------
3702    snd_trident_interrupt
3703 
3704    Description: ISR for Trident 4DWave device
3705 
3706    Parameters:  trident  - device specific private data for 4DWave card
3707 
3708    Problems:    It seems that Trident chips generates interrupts more than
3709                 one time in special cases. The spurious interrupts are
3710                 detected via sample timer (T4D_STIMER) and computing
3711                 corresponding delta value. The limits are detected with
3712                 the method try & fail so it is possible that it won't
3713                 work on all computers. [jaroslav]
3714 
3715    Returns:     None.
3716 
3717   ---------------------------------------------------------------------------*/
3718 
3719 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id)
3720 {
3721 	struct snd_trident *trident = dev_id;
3722 	unsigned int audio_int, chn_int, stimer, channel, mask, tmp;
3723 	int delta;
3724 	struct snd_trident_voice *voice;
3725 
3726 	audio_int = inl(TRID_REG(trident, T4D_MISCINT));
3727 	if ((audio_int & (ADDRESS_IRQ|MPU401_IRQ)) == 0)
3728 		return IRQ_NONE;
3729 	if (audio_int & ADDRESS_IRQ) {
3730 		// get interrupt status for all channels
3731 		spin_lock(&trident->reg_lock);
3732 		stimer = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
3733 		chn_int = inl(TRID_REG(trident, T4D_AINT_A));
3734 		if (chn_int == 0)
3735 			goto __skip1;
3736 		outl(chn_int, TRID_REG(trident, T4D_AINT_A));	/* ack */
3737 	      __skip1:
3738 		chn_int = inl(TRID_REG(trident, T4D_AINT_B));
3739 		if (chn_int == 0)
3740 			goto __skip2;
3741 		for (channel = 63; channel >= 32; channel--) {
3742 			mask = 1 << (channel&0x1f);
3743 			if ((chn_int & mask) == 0)
3744 				continue;
3745 			voice = &trident->synth.voices[channel];
3746 			if (!voice->pcm || voice->substream == NULL) {
3747 				outl(mask, TRID_REG(trident, T4D_STOP_B));
3748 				continue;
3749 			}
3750 			delta = (int)stimer - (int)voice->stimer;
3751 			if (delta < 0)
3752 				delta = -delta;
3753 			if ((unsigned int)delta < voice->spurious_threshold) {
3754 				/* do some statistics here */
3755 				trident->spurious_irq_count++;
3756 				if (trident->spurious_irq_max_delta < (unsigned int)delta)
3757 					trident->spurious_irq_max_delta = delta;
3758 				continue;
3759 			}
3760 			voice->stimer = stimer;
3761 			if (voice->isync) {
3762 				if (!voice->isync3) {
3763 					tmp = inw(TRID_REG(trident, T4D_SBBL_SBCL));
3764 					if (trident->bDMAStart & 0x40)
3765 						tmp >>= 1;
3766 					if (tmp > 0)
3767 						tmp = voice->isync_max - tmp;
3768 				} else {
3769 					tmp = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
3770 				}
3771 				if (tmp < voice->isync_mark) {
3772 					if (tmp > 0x10)
3773 						tmp = voice->isync_ESO - 7;
3774 					else
3775 						tmp = voice->isync_ESO + 2;
3776 					/* update ESO for IRQ voice to preserve sync */
3777 					snd_trident_stop_voice(trident, voice->number);
3778 					snd_trident_write_eso_reg(trident, voice, tmp);
3779 					snd_trident_start_voice(trident, voice->number);
3780 				}
3781 			} else if (voice->isync2) {
3782 				voice->isync2 = 0;
3783 				/* write original ESO and update CSO for IRQ voice to preserve sync */
3784 				snd_trident_stop_voice(trident, voice->number);
3785 				snd_trident_write_cso_reg(trident, voice, voice->isync_mark);
3786 				snd_trident_write_eso_reg(trident, voice, voice->ESO);
3787 				snd_trident_start_voice(trident, voice->number);
3788 			}
3789 #if 0
3790 			if (voice->extra) {
3791 				/* update CSO for extra voice to preserve sync */
3792 				snd_trident_stop_voice(trident, voice->extra->number);
3793 				snd_trident_write_cso_reg(trident, voice->extra, 0);
3794 				snd_trident_start_voice(trident, voice->extra->number);
3795 			}
3796 #endif
3797 			spin_unlock(&trident->reg_lock);
3798 			snd_pcm_period_elapsed(voice->substream);
3799 			spin_lock(&trident->reg_lock);
3800 		}
3801 		outl(chn_int, TRID_REG(trident, T4D_AINT_B));	/* ack */
3802 	      __skip2:
3803 		spin_unlock(&trident->reg_lock);
3804 	}
3805 	if (audio_int & MPU401_IRQ) {
3806 		if (trident->rmidi) {
3807 			snd_mpu401_uart_interrupt(irq, trident->rmidi->private_data);
3808 		} else {
3809 			inb(TRID_REG(trident, T4D_MPUR0));
3810 		}
3811 	}
3812 	// outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW), TRID_REG(trident, T4D_MISCINT));
3813 	return IRQ_HANDLED;
3814 }
3815 
3816 struct snd_trident_voice *snd_trident_alloc_voice(struct snd_trident * trident, int type, int client, int port)
3817 {
3818 	struct snd_trident_voice *pvoice;
3819 	unsigned long flags;
3820 	int idx;
3821 
3822 	spin_lock_irqsave(&trident->voice_alloc, flags);
3823 	if (type == SNDRV_TRIDENT_VOICE_TYPE_PCM) {
3824 		idx = snd_trident_allocate_pcm_channel(trident);
3825 		if(idx < 0) {
3826 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3827 			return NULL;
3828 		}
3829 		pvoice = &trident->synth.voices[idx];
3830 		pvoice->use = 1;
3831 		pvoice->pcm = 1;
3832 		pvoice->capture = 0;
3833 		pvoice->spdif = 0;
3834 		pvoice->memblk = NULL;
3835 		pvoice->substream = NULL;
3836 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3837 		return pvoice;
3838 	}
3839 	if (type == SNDRV_TRIDENT_VOICE_TYPE_SYNTH) {
3840 		idx = snd_trident_allocate_synth_channel(trident);
3841 		if(idx < 0) {
3842 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3843 			return NULL;
3844 		}
3845 		pvoice = &trident->synth.voices[idx];
3846 		pvoice->use = 1;
3847 		pvoice->synth = 1;
3848 		pvoice->client = client;
3849 		pvoice->port = port;
3850 		pvoice->memblk = NULL;
3851 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3852 		return pvoice;
3853 	}
3854 	if (type == SNDRV_TRIDENT_VOICE_TYPE_MIDI) {
3855 	}
3856 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3857 	return NULL;
3858 }
3859 
3860 EXPORT_SYMBOL(snd_trident_alloc_voice);
3861 
3862 void snd_trident_free_voice(struct snd_trident * trident, struct snd_trident_voice *voice)
3863 {
3864 	unsigned long flags;
3865 	void (*private_free)(struct snd_trident_voice *);
3866 
3867 	if (voice == NULL || !voice->use)
3868 		return;
3869 	snd_trident_clear_voices(trident, voice->number, voice->number);
3870 	spin_lock_irqsave(&trident->voice_alloc, flags);
3871 	private_free = voice->private_free;
3872 	voice->private_free = NULL;
3873 	voice->private_data = NULL;
3874 	if (voice->pcm)
3875 		snd_trident_free_pcm_channel(trident, voice->number);
3876 	if (voice->synth)
3877 		snd_trident_free_synth_channel(trident, voice->number);
3878 	voice->use = voice->pcm = voice->synth = voice->midi = 0;
3879 	voice->capture = voice->spdif = 0;
3880 	voice->sample_ops = NULL;
3881 	voice->substream = NULL;
3882 	voice->extra = NULL;
3883 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3884 	if (private_free)
3885 		private_free(voice);
3886 }
3887 
3888 EXPORT_SYMBOL(snd_trident_free_voice);
3889 
3890 static void snd_trident_clear_voices(struct snd_trident * trident, unsigned short v_min, unsigned short v_max)
3891 {
3892 	unsigned int i, val, mask[2] = { 0, 0 };
3893 
3894 	if (snd_BUG_ON(v_min > 63 || v_max > 63))
3895 		return;
3896 	for (i = v_min; i <= v_max; i++)
3897 		mask[i >> 5] |= 1 << (i & 0x1f);
3898 	if (mask[0]) {
3899 		outl(mask[0], TRID_REG(trident, T4D_STOP_A));
3900 		val = inl(TRID_REG(trident, T4D_AINTEN_A));
3901 		outl(val & ~mask[0], TRID_REG(trident, T4D_AINTEN_A));
3902 	}
3903 	if (mask[1]) {
3904 		outl(mask[1], TRID_REG(trident, T4D_STOP_B));
3905 		val = inl(TRID_REG(trident, T4D_AINTEN_B));
3906 		outl(val & ~mask[1], TRID_REG(trident, T4D_AINTEN_B));
3907 	}
3908 }
3909 
3910 #ifdef CONFIG_PM_SLEEP
3911 static int snd_trident_suspend(struct device *dev)
3912 {
3913 	struct snd_card *card = dev_get_drvdata(dev);
3914 	struct snd_trident *trident = card->private_data;
3915 
3916 	trident->in_suspend = 1;
3917 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
3918 	snd_pcm_suspend_all(trident->pcm);
3919 	snd_pcm_suspend_all(trident->foldback);
3920 	snd_pcm_suspend_all(trident->spdif);
3921 
3922 	snd_ac97_suspend(trident->ac97);
3923 	snd_ac97_suspend(trident->ac97_sec);
3924 	return 0;
3925 }
3926 
3927 static int snd_trident_resume(struct device *dev)
3928 {
3929 	struct snd_card *card = dev_get_drvdata(dev);
3930 	struct snd_trident *trident = card->private_data;
3931 
3932 	switch (trident->device) {
3933 	case TRIDENT_DEVICE_ID_DX:
3934 		snd_trident_4d_dx_init(trident);
3935 		break;
3936 	case TRIDENT_DEVICE_ID_NX:
3937 		snd_trident_4d_nx_init(trident);
3938 		break;
3939 	case TRIDENT_DEVICE_ID_SI7018:
3940 		snd_trident_sis_init(trident);
3941 		break;
3942 	}
3943 
3944 	snd_ac97_resume(trident->ac97);
3945 	snd_ac97_resume(trident->ac97_sec);
3946 
3947 	/* restore some registers */
3948 	outl(trident->musicvol_wavevol, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3949 
3950 	snd_trident_enable_eso(trident);
3951 
3952 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
3953 	trident->in_suspend = 0;
3954 	return 0;
3955 }
3956 
3957 SIMPLE_DEV_PM_OPS(snd_trident_pm, snd_trident_suspend, snd_trident_resume);
3958 #endif /* CONFIG_PM_SLEEP */
3959