xref: /openbmc/linux/sound/pci/trident/trident_main.c (revision 9ac8d3fb)
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 
39 #include <sound/core.h>
40 #include <sound/info.h>
41 #include <sound/control.h>
42 #include <sound/tlv.h>
43 #include <sound/trident.h>
44 #include <sound/asoundef.h>
45 
46 #include <asm/io.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 	printk("Trident voice %i:\n", voice);
72 	outb(voice, TRID_REG(trident, T4D_LFO_GC_CIR));
73 	val = inl(TRID_REG(trident, CH_LBA));
74 	printk("LBA: 0x%x\n", val);
75 	val = inl(TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
76 	printk("GVSel: %i\n", val >> 31);
77 	printk("Pan: 0x%x\n", (val >> 24) & 0x7f);
78 	printk("Vol: 0x%x\n", (val >> 16) & 0xff);
79 	printk("CTRL: 0x%x\n", (val >> 12) & 0x0f);
80 	printk("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 		printk("CSO: 0x%x\n", val >> 16);
84 		printk("Alpha: 0x%x\n", (val >> 4) & 0x0fff);
85 		printk("FMS: 0x%x\n", val & 0x0f);
86 		val = inl(TRID_REG(trident, CH_DX_ESO_DELTA));
87 		printk("ESO: 0x%x\n", val >> 16);
88 		printk("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 		printk("CSO: 0x%x\n", val & 0x00ffffff);
94 		val = inl(TRID_REG(trident, CH_NX_DELTA_ESO));
95 		tmp |= (val >> 16) & 0xff00;
96 		printk("Delta: 0x%x\n", tmp);
97 		printk("ESO: 0x%x\n", val & 0x00ffffff);
98 		val = inl(TRID_REG(trident, CH_NX_ALPHA_FMS_FMC_RVOL_CVOL));
99 		printk("Alpha: 0x%x\n", val >> 20);
100 		printk("FMS: 0x%x\n", (val >> 16) & 0x0f);
101 	}
102 	printk("FMC: 0x%x\n", (val >> 14) & 3);
103 	printk("RVol: 0x%x\n", (val >> 7) & 0x7f);
104 	printk("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 		snd_printk(KERN_ERR "ac97 codec read TIMEOUT [0x%x/0x%x]!!!\n",
159 			   reg, data);
160 		data = 0;
161 	}
162 
163 	spin_unlock_irqrestore(&trident->reg_lock, flags);
164 	return ((unsigned short) (data >> 16));
165 }
166 
167 /*---------------------------------------------------------------------------
168    void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
169    unsigned short wdata)
170 
171    Description: This routine will do all of the writing to the external
172                 CODEC (AC97).
173 
174    Parameters:	ac97 - ac97 codec structure
175    	        reg - CODEC register index, from AC97 Hal.
176                 data  - Lower 16 bits are the data to write to CODEC.
177 
178    returns:     TRUE if everything went ok, else FALSE.
179 
180   ---------------------------------------------------------------------------*/
181 static void snd_trident_codec_write(struct snd_ac97 *ac97, unsigned short reg,
182 				    unsigned short wdata)
183 {
184 	unsigned int address, data;
185 	unsigned short count = 0xffff;
186 	unsigned long flags;
187 	struct snd_trident *trident = ac97->private_data;
188 
189 	data = ((unsigned long) wdata) << 16;
190 
191 	spin_lock_irqsave(&trident->reg_lock, flags);
192 	if (trident->device == TRIDENT_DEVICE_ID_DX) {
193 		address = DX_ACR0_AC97_W;
194 
195 		/* read AC-97 write register status */
196 		do {
197 			if ((inw(TRID_REG(trident, address)) & DX_AC97_BUSY_WRITE) == 0)
198 				break;
199 		} while (--count);
200 
201 		data |= (DX_AC97_BUSY_WRITE | (reg & 0x000000ff));
202 	} else if (trident->device == TRIDENT_DEVICE_ID_NX) {
203 		address = NX_ACR1_AC97_W;
204 
205 		/* read AC-97 write register status */
206 		do {
207 			if ((inw(TRID_REG(trident, address)) & NX_AC97_BUSY_WRITE) == 0)
208 				break;
209 		} while (--count);
210 
211 		data |= (NX_AC97_BUSY_WRITE | (ac97->num << 8) | (reg & 0x000000ff));
212 	} else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
213 		address = SI_AC97_WRITE;
214 
215 		/* read AC-97 write register status */
216 		do {
217 			if ((inw(TRID_REG(trident, address)) & (SI_AC97_BUSY_WRITE)) == 0)
218 				break;
219 		} while (--count);
220 
221 		data |= SI_AC97_BUSY_WRITE | SI_AC97_AUDIO_BUSY | (reg & 0x000000ff);
222 		if (ac97->num == 1)
223 			data |= SI_AC97_SECONDARY;
224 	} else {
225 		address = 0;	/* keep GCC happy */
226 		count = 0;	/* return */
227 	}
228 
229 	if (count == 0) {
230 		spin_unlock_irqrestore(&trident->reg_lock, flags);
231 		return;
232 	}
233 	outl(data, TRID_REG(trident, address));
234 	spin_unlock_irqrestore(&trident->reg_lock, flags);
235 }
236 
237 /*---------------------------------------------------------------------------
238    void snd_trident_enable_eso(struct snd_trident *trident)
239 
240    Description: This routine will enable end of loop interrupts.
241                 End of loop interrupts will occur when a running
242                 channel reaches ESO.
243                 Also enables middle of loop interrupts.
244 
245    Parameters:  trident - pointer to target device class for 4DWave.
246 
247   ---------------------------------------------------------------------------*/
248 
249 static void snd_trident_enable_eso(struct snd_trident * trident)
250 {
251 	unsigned int val;
252 
253 	val = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
254 	val |= ENDLP_IE;
255 	val |= MIDLP_IE;
256 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
257 		val |= BANK_B_EN;
258 	outl(val, TRID_REG(trident, T4D_LFO_GC_CIR));
259 }
260 
261 /*---------------------------------------------------------------------------
262    void snd_trident_disable_eso(struct snd_trident *trident)
263 
264    Description: This routine will disable end of loop interrupts.
265                 End of loop interrupts will occur when a running
266                 channel reaches ESO.
267                 Also disables middle of loop interrupts.
268 
269    Parameters:
270                 trident - pointer to target device class for 4DWave.
271 
272    returns:     TRUE if everything went ok, else FALSE.
273 
274   ---------------------------------------------------------------------------*/
275 
276 static void snd_trident_disable_eso(struct snd_trident * trident)
277 {
278 	unsigned int tmp;
279 
280 	tmp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
281 	tmp &= ~ENDLP_IE;
282 	tmp &= ~MIDLP_IE;
283 	outl(tmp, TRID_REG(trident, T4D_LFO_GC_CIR));
284 }
285 
286 /*---------------------------------------------------------------------------
287    void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
288 
289     Description: Start a voice, any channel 0 thru 63.
290                  This routine automatically handles the fact that there are
291                  more than 32 channels available.
292 
293     Parameters : voice - Voice number 0 thru n.
294                  trident - pointer to target device class for 4DWave.
295 
296     Return Value: None.
297 
298   ---------------------------------------------------------------------------*/
299 
300 void snd_trident_start_voice(struct snd_trident * trident, unsigned int voice)
301 {
302 	unsigned int mask = 1 << (voice & 0x1f);
303 	unsigned int reg = (voice & 0x20) ? T4D_START_B : T4D_START_A;
304 
305 	outl(mask, TRID_REG(trident, reg));
306 }
307 
308 EXPORT_SYMBOL(snd_trident_start_voice);
309 
310 /*---------------------------------------------------------------------------
311    void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
312 
313     Description: Stop a voice, any channel 0 thru 63.
314                  This routine automatically handles the fact that there are
315                  more than 32 channels available.
316 
317     Parameters : voice - Voice number 0 thru n.
318                  trident - pointer to target device class for 4DWave.
319 
320     Return Value: None.
321 
322   ---------------------------------------------------------------------------*/
323 
324 void snd_trident_stop_voice(struct snd_trident * trident, unsigned int voice)
325 {
326 	unsigned int mask = 1 << (voice & 0x1f);
327 	unsigned int reg = (voice & 0x20) ? T4D_STOP_B : T4D_STOP_A;
328 
329 	outl(mask, TRID_REG(trident, reg));
330 }
331 
332 EXPORT_SYMBOL(snd_trident_stop_voice);
333 
334 /*---------------------------------------------------------------------------
335     int snd_trident_allocate_pcm_channel(struct snd_trident *trident)
336 
337     Description: Allocate hardware channel in Bank B (32-63).
338 
339     Parameters :  trident - pointer to target device class for 4DWave.
340 
341     Return Value: hardware channel - 32-63 or -1 when no channel is available
342 
343   ---------------------------------------------------------------------------*/
344 
345 static int snd_trident_allocate_pcm_channel(struct snd_trident * trident)
346 {
347 	int idx;
348 
349 	if (trident->ChanPCMcnt >= trident->ChanPCM)
350 		return -1;
351 	for (idx = 31; idx >= 0; idx--) {
352 		if (!(trident->ChanMap[T4D_BANK_B] & (1 << idx))) {
353 			trident->ChanMap[T4D_BANK_B] |= 1 << idx;
354 			trident->ChanPCMcnt++;
355 			return idx + 32;
356 		}
357 	}
358 	return -1;
359 }
360 
361 /*---------------------------------------------------------------------------
362     void snd_trident_free_pcm_channel(int channel)
363 
364     Description: Free hardware channel in Bank B (32-63)
365 
366     Parameters :  trident - pointer to target device class for 4DWave.
367 	          channel - hardware channel number 0-63
368 
369     Return Value: none
370 
371   ---------------------------------------------------------------------------*/
372 
373 static void snd_trident_free_pcm_channel(struct snd_trident *trident, int channel)
374 {
375 	if (channel < 32 || channel > 63)
376 		return;
377 	channel &= 0x1f;
378 	if (trident->ChanMap[T4D_BANK_B] & (1 << channel)) {
379 		trident->ChanMap[T4D_BANK_B] &= ~(1 << channel);
380 		trident->ChanPCMcnt--;
381 	}
382 }
383 
384 /*---------------------------------------------------------------------------
385     unsigned int snd_trident_allocate_synth_channel(void)
386 
387     Description: Allocate hardware channel in Bank A (0-31).
388 
389     Parameters :  trident - pointer to target device class for 4DWave.
390 
391     Return Value: hardware channel - 0-31 or -1 when no channel is available
392 
393   ---------------------------------------------------------------------------*/
394 
395 static int snd_trident_allocate_synth_channel(struct snd_trident * trident)
396 {
397 	int idx;
398 
399 	for (idx = 31; idx >= 0; idx--) {
400 		if (!(trident->ChanMap[T4D_BANK_A] & (1 << idx))) {
401 			trident->ChanMap[T4D_BANK_A] |= 1 << idx;
402 			trident->synth.ChanSynthCount++;
403 			return idx;
404 		}
405 	}
406 	return -1;
407 }
408 
409 /*---------------------------------------------------------------------------
410     void snd_trident_free_synth_channel( int channel )
411 
412     Description: Free hardware channel in Bank B (0-31).
413 
414     Parameters :  trident - pointer to target device class for 4DWave.
415 	          channel - hardware channel number 0-63
416 
417     Return Value: none
418 
419   ---------------------------------------------------------------------------*/
420 
421 static void snd_trident_free_synth_channel(struct snd_trident *trident, int channel)
422 {
423 	if (channel < 0 || channel > 31)
424 		return;
425 	channel &= 0x1f;
426 	if (trident->ChanMap[T4D_BANK_A] & (1 << channel)) {
427 		trident->ChanMap[T4D_BANK_A] &= ~(1 << channel);
428 		trident->synth.ChanSynthCount--;
429 	}
430 }
431 
432 /*---------------------------------------------------------------------------
433    snd_trident_write_voice_regs
434 
435    Description: This routine will complete and write the 5 hardware channel
436                 registers to hardware.
437 
438    Parameters:  trident - pointer to target device class for 4DWave.
439                 voice - synthesizer voice structure
440                 Each register field.
441 
442   ---------------------------------------------------------------------------*/
443 
444 void snd_trident_write_voice_regs(struct snd_trident * trident,
445 				  struct snd_trident_voice * voice)
446 {
447 	unsigned int FmcRvolCvol;
448 	unsigned int regs[5];
449 
450 	regs[1] = voice->LBA;
451 	regs[4] = (voice->GVSel << 31) |
452 		  ((voice->Pan & 0x0000007f) << 24) |
453 		  ((voice->CTRL & 0x0000000f) << 12);
454 	FmcRvolCvol = ((voice->FMC & 3) << 14) |
455 	              ((voice->RVol & 0x7f) << 7) |
456 	              (voice->CVol & 0x7f);
457 
458 	switch (trident->device) {
459 	case TRIDENT_DEVICE_ID_SI7018:
460 		regs[4] |= voice->number > 31 ?
461 				(voice->Vol & 0x000003ff) :
462 				((voice->Vol & 0x00003fc) << (16-2)) |
463 				(voice->EC & 0x00000fff);
464 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
465 			(voice->FMS & 0x0000000f);
466 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
467 		regs[3] = (voice->Attribute << 16) | FmcRvolCvol;
468 		break;
469 	case TRIDENT_DEVICE_ID_DX:
470 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
471 			   (voice->EC & 0x00000fff);
472 		regs[0] = (voice->CSO << 16) | ((voice->Alpha & 0x00000fff) << 4) |
473 			(voice->FMS & 0x0000000f);
474 		regs[2] = (voice->ESO << 16) | (voice->Delta & 0x0ffff);
475 		regs[3] = FmcRvolCvol;
476 		break;
477 	case TRIDENT_DEVICE_ID_NX:
478 		regs[4] |= ((voice->Vol & 0x000003fc) << (16-2)) |
479 			   (voice->EC & 0x00000fff);
480 		regs[0] = (voice->Delta << 24) | (voice->CSO & 0x00ffffff);
481 		regs[2] = ((voice->Delta << 16) & 0xff000000) |
482 			(voice->ESO & 0x00ffffff);
483 		regs[3] = (voice->Alpha << 20) |
484 			((voice->FMS & 0x0000000f) << 16) | FmcRvolCvol;
485 		break;
486 	default:
487 		snd_BUG();
488 		return;
489 	}
490 
491 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
492 	outl(regs[0], TRID_REG(trident, CH_START + 0));
493 	outl(regs[1], TRID_REG(trident, CH_START + 4));
494 	outl(regs[2], TRID_REG(trident, CH_START + 8));
495 	outl(regs[3], TRID_REG(trident, CH_START + 12));
496 	outl(regs[4], TRID_REG(trident, CH_START + 16));
497 
498 #if 0
499 	printk("written %i channel:\n", voice->number);
500 	printk("  regs[0] = 0x%x/0x%x\n", regs[0], inl(TRID_REG(trident, CH_START + 0)));
501 	printk("  regs[1] = 0x%x/0x%x\n", regs[1], inl(TRID_REG(trident, CH_START + 4)));
502 	printk("  regs[2] = 0x%x/0x%x\n", regs[2], inl(TRID_REG(trident, CH_START + 8)));
503 	printk("  regs[3] = 0x%x/0x%x\n", regs[3], inl(TRID_REG(trident, CH_START + 12)));
504 	printk("  regs[4] = 0x%x/0x%x\n", regs[4], inl(TRID_REG(trident, CH_START + 16)));
505 #endif
506 }
507 
508 EXPORT_SYMBOL(snd_trident_write_voice_regs);
509 
510 /*---------------------------------------------------------------------------
511    snd_trident_write_cso_reg
512 
513    Description: This routine will write the new CSO offset
514                 register to hardware.
515 
516    Parameters:  trident - pointer to target device class for 4DWave.
517                 voice - synthesizer voice structure
518                 CSO - new CSO value
519 
520   ---------------------------------------------------------------------------*/
521 
522 static void snd_trident_write_cso_reg(struct snd_trident * trident,
523 				      struct snd_trident_voice * voice,
524 				      unsigned int CSO)
525 {
526 	voice->CSO = CSO;
527 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
528 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
529 		outw(voice->CSO, TRID_REG(trident, CH_DX_CSO_ALPHA_FMS) + 2);
530 	} else {
531 		outl((voice->Delta << 24) |
532 		     (voice->CSO & 0x00ffffff), TRID_REG(trident, CH_NX_DELTA_CSO));
533 	}
534 }
535 
536 /*---------------------------------------------------------------------------
537    snd_trident_write_eso_reg
538 
539    Description: This routine will write the new ESO offset
540                 register to hardware.
541 
542    Parameters:  trident - pointer to target device class for 4DWave.
543                 voice - synthesizer voice structure
544                 ESO - new ESO value
545 
546   ---------------------------------------------------------------------------*/
547 
548 static void snd_trident_write_eso_reg(struct snd_trident * trident,
549 				      struct snd_trident_voice * voice,
550 				      unsigned int ESO)
551 {
552 	voice->ESO = ESO;
553 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
554 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
555 		outw(voice->ESO, TRID_REG(trident, CH_DX_ESO_DELTA) + 2);
556 	} else {
557 		outl(((voice->Delta << 16) & 0xff000000) | (voice->ESO & 0x00ffffff),
558 		     TRID_REG(trident, CH_NX_DELTA_ESO));
559 	}
560 }
561 
562 /*---------------------------------------------------------------------------
563    snd_trident_write_vol_reg
564 
565    Description: This routine will write the new voice volume
566                 register to hardware.
567 
568    Parameters:  trident - pointer to target device class for 4DWave.
569                 voice - synthesizer voice structure
570                 Vol - new voice volume
571 
572   ---------------------------------------------------------------------------*/
573 
574 static void snd_trident_write_vol_reg(struct snd_trident * trident,
575 				      struct snd_trident_voice * voice,
576 				      unsigned int Vol)
577 {
578 	voice->Vol = Vol;
579 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
580 	switch (trident->device) {
581 	case TRIDENT_DEVICE_ID_DX:
582 	case TRIDENT_DEVICE_ID_NX:
583 		outb(voice->Vol >> 2, TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 2));
584 		break;
585 	case TRIDENT_DEVICE_ID_SI7018:
586 		// printk("voice->Vol = 0x%x\n", voice->Vol);
587 		outw((voice->CTRL << 12) | voice->Vol,
588 		     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC));
589 		break;
590 	}
591 }
592 
593 /*---------------------------------------------------------------------------
594    snd_trident_write_pan_reg
595 
596    Description: This routine will write the new voice pan
597                 register to hardware.
598 
599    Parameters:  trident - pointer to target device class for 4DWave.
600                 voice - synthesizer voice structure
601                 Pan - new pan value
602 
603   ---------------------------------------------------------------------------*/
604 
605 static void snd_trident_write_pan_reg(struct snd_trident * trident,
606 				      struct snd_trident_voice * voice,
607 				      unsigned int Pan)
608 {
609 	voice->Pan = Pan;
610 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
611 	outb(((voice->GVSel & 0x01) << 7) | (voice->Pan & 0x7f),
612 	     TRID_REG(trident, CH_GVSEL_PAN_VOL_CTRL_EC + 3));
613 }
614 
615 /*---------------------------------------------------------------------------
616    snd_trident_write_rvol_reg
617 
618    Description: This routine will write the new reverb volume
619                 register to hardware.
620 
621    Parameters:  trident - pointer to target device class for 4DWave.
622                 voice - synthesizer voice structure
623                 RVol - new reverb volume
624 
625   ---------------------------------------------------------------------------*/
626 
627 static void snd_trident_write_rvol_reg(struct snd_trident * trident,
628 				       struct snd_trident_voice * voice,
629 				       unsigned int RVol)
630 {
631 	voice->RVol = RVol;
632 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
633 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
634 	     (voice->CVol & 0x007f),
635 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
636 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
637 }
638 
639 /*---------------------------------------------------------------------------
640    snd_trident_write_cvol_reg
641 
642    Description: This routine will write the new chorus volume
643                 register to hardware.
644 
645    Parameters:  trident - pointer to target device class for 4DWave.
646                 voice - synthesizer voice structure
647                 CVol - new chorus volume
648 
649   ---------------------------------------------------------------------------*/
650 
651 static void snd_trident_write_cvol_reg(struct snd_trident * trident,
652 				       struct snd_trident_voice * voice,
653 				       unsigned int CVol)
654 {
655 	voice->CVol = CVol;
656 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
657 	outw(((voice->FMC & 0x0003) << 14) | ((voice->RVol & 0x007f) << 7) |
658 	     (voice->CVol & 0x007f),
659 	     TRID_REG(trident, trident->device == TRIDENT_DEVICE_ID_NX ?
660 		      CH_NX_ALPHA_FMS_FMC_RVOL_CVOL : CH_DX_FMC_RVOL_CVOL));
661 }
662 
663 /*---------------------------------------------------------------------------
664    snd_trident_convert_rate
665 
666    Description: This routine converts rate in HZ to hardware delta value.
667 
668    Parameters:  trident - pointer to target device class for 4DWave.
669                 rate - Real or Virtual channel number.
670 
671    Returns:     Delta value.
672 
673   ---------------------------------------------------------------------------*/
674 static unsigned int snd_trident_convert_rate(unsigned int rate)
675 {
676 	unsigned int delta;
677 
678 	// We special case 44100 and 8000 since rounding with the equation
679 	// does not give us an accurate enough value. For 11025 and 22050
680 	// the equation gives us the best answer. All other frequencies will
681 	// also use the equation. JDW
682 	if (rate == 44100)
683 		delta = 0xeb3;
684 	else if (rate == 8000)
685 		delta = 0x2ab;
686 	else if (rate == 48000)
687 		delta = 0x1000;
688 	else
689 		delta = (((rate << 12) + 24000) / 48000) & 0x0000ffff;
690 	return delta;
691 }
692 
693 /*---------------------------------------------------------------------------
694    snd_trident_convert_adc_rate
695 
696    Description: This routine converts rate in HZ to hardware delta value.
697 
698    Parameters:  trident - pointer to target device class for 4DWave.
699                 rate - Real or Virtual channel number.
700 
701    Returns:     Delta value.
702 
703   ---------------------------------------------------------------------------*/
704 static unsigned int snd_trident_convert_adc_rate(unsigned int rate)
705 {
706 	unsigned int delta;
707 
708 	// We special case 44100 and 8000 since rounding with the equation
709 	// does not give us an accurate enough value. For 11025 and 22050
710 	// the equation gives us the best answer. All other frequencies will
711 	// also use the equation. JDW
712 	if (rate == 44100)
713 		delta = 0x116a;
714 	else if (rate == 8000)
715 		delta = 0x6000;
716 	else if (rate == 48000)
717 		delta = 0x1000;
718 	else
719 		delta = ((48000 << 12) / rate) & 0x0000ffff;
720 	return delta;
721 }
722 
723 /*---------------------------------------------------------------------------
724    snd_trident_spurious_threshold
725 
726    Description: This routine converts rate in HZ to spurious threshold.
727 
728    Parameters:  trident - pointer to target device class for 4DWave.
729                 rate - Real or Virtual channel number.
730 
731    Returns:     Delta value.
732 
733   ---------------------------------------------------------------------------*/
734 static unsigned int snd_trident_spurious_threshold(unsigned int rate,
735 						   unsigned int period_size)
736 {
737 	unsigned int res = (rate * period_size) / 48000;
738 	if (res < 64)
739 		res = res / 2;
740 	else
741 		res -= 32;
742 	return res;
743 }
744 
745 /*---------------------------------------------------------------------------
746    snd_trident_control_mode
747 
748    Description: This routine returns a control mode for a PCM channel.
749 
750    Parameters:  trident - pointer to target device class for 4DWave.
751                 substream  - PCM substream
752 
753    Returns:     Control value.
754 
755   ---------------------------------------------------------------------------*/
756 static unsigned int snd_trident_control_mode(struct snd_pcm_substream *substream)
757 {
758 	unsigned int CTRL;
759 	struct snd_pcm_runtime *runtime = substream->runtime;
760 
761 	/* set ctrl mode
762 	   CTRL default: 8-bit (unsigned) mono, loop mode enabled
763 	 */
764 	CTRL = 0x00000001;
765 	if (snd_pcm_format_width(runtime->format) == 16)
766 		CTRL |= 0x00000008;	// 16-bit data
767 	if (snd_pcm_format_signed(runtime->format))
768 		CTRL |= 0x00000002;	// signed data
769 	if (runtime->channels > 1)
770 		CTRL |= 0x00000004;	// stereo data
771 	return CTRL;
772 }
773 
774 /*
775  *  PCM part
776  */
777 
778 /*---------------------------------------------------------------------------
779    snd_trident_ioctl
780 
781    Description: Device I/O control handler for playback/capture parameters.
782 
783    Parameters:   substream  - PCM substream class
784                 cmd     - what ioctl message to process
785                 arg     - additional message infoarg
786 
787    Returns:     Error status
788 
789   ---------------------------------------------------------------------------*/
790 
791 static int snd_trident_ioctl(struct snd_pcm_substream *substream,
792 			     unsigned int cmd,
793 			     void *arg)
794 {
795 	/* FIXME: it seems that with small periods the behaviour of
796 	          trident hardware is unpredictable and interrupt generator
797 	          is broken */
798 	return snd_pcm_lib_ioctl(substream, cmd, arg);
799 }
800 
801 /*---------------------------------------------------------------------------
802    snd_trident_allocate_pcm_mem
803 
804    Description: Allocate PCM ring buffer for given substream
805 
806    Parameters:  substream  - PCM substream class
807 		hw_params  - hardware parameters
808 
809    Returns:     Error status
810 
811   ---------------------------------------------------------------------------*/
812 
813 static int snd_trident_allocate_pcm_mem(struct snd_pcm_substream *substream,
814 					struct snd_pcm_hw_params *hw_params)
815 {
816 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
817 	struct snd_pcm_runtime *runtime = substream->runtime;
818 	struct snd_trident_voice *voice = runtime->private_data;
819 	int err;
820 
821 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
822 		return err;
823 	if (trident->tlb.entries) {
824 		if (err > 0) { /* change */
825 			if (voice->memblk)
826 				snd_trident_free_pages(trident, voice->memblk);
827 			voice->memblk = snd_trident_alloc_pages(trident, substream);
828 			if (voice->memblk == NULL)
829 				return -ENOMEM;
830 		}
831 	}
832 	return 0;
833 }
834 
835 /*---------------------------------------------------------------------------
836    snd_trident_allocate_evoice
837 
838    Description: Allocate extra voice as interrupt generator
839 
840    Parameters:  substream  - PCM substream class
841 		hw_params  - hardware parameters
842 
843    Returns:     Error status
844 
845   ---------------------------------------------------------------------------*/
846 
847 static int snd_trident_allocate_evoice(struct snd_pcm_substream *substream,
848 				       struct snd_pcm_hw_params *hw_params)
849 {
850 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
851 	struct snd_pcm_runtime *runtime = substream->runtime;
852 	struct snd_trident_voice *voice = runtime->private_data;
853 	struct snd_trident_voice *evoice = voice->extra;
854 
855 	/* voice management */
856 
857 	if (params_buffer_size(hw_params) / 2 != params_period_size(hw_params)) {
858 		if (evoice == NULL) {
859 			evoice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
860 			if (evoice == NULL)
861 				return -ENOMEM;
862 			voice->extra = evoice;
863 			evoice->substream = substream;
864 		}
865 	} else {
866 		if (evoice != NULL) {
867 			snd_trident_free_voice(trident, evoice);
868 			voice->extra = evoice = NULL;
869 		}
870 	}
871 
872 	return 0;
873 }
874 
875 /*---------------------------------------------------------------------------
876    snd_trident_hw_params
877 
878    Description: Set the hardware parameters for the playback device.
879 
880    Parameters:  substream  - PCM substream class
881 		hw_params  - hardware parameters
882 
883    Returns:     Error status
884 
885   ---------------------------------------------------------------------------*/
886 
887 static int snd_trident_hw_params(struct snd_pcm_substream *substream,
888 				 struct snd_pcm_hw_params *hw_params)
889 {
890 	int err;
891 
892 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
893 	if (err >= 0)
894 		err = snd_trident_allocate_evoice(substream, hw_params);
895 	return err;
896 }
897 
898 /*---------------------------------------------------------------------------
899    snd_trident_playback_hw_free
900 
901    Description: Release the hardware resources for the playback device.
902 
903    Parameters:  substream  - PCM substream class
904 
905    Returns:     Error status
906 
907   ---------------------------------------------------------------------------*/
908 
909 static int snd_trident_hw_free(struct snd_pcm_substream *substream)
910 {
911 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
912 	struct snd_pcm_runtime *runtime = substream->runtime;
913 	struct snd_trident_voice *voice = runtime->private_data;
914 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
915 
916 	if (trident->tlb.entries) {
917 		if (voice && voice->memblk) {
918 			snd_trident_free_pages(trident, voice->memblk);
919 			voice->memblk = NULL;
920 		}
921 	}
922 	snd_pcm_lib_free_pages(substream);
923 	if (evoice != NULL) {
924 		snd_trident_free_voice(trident, evoice);
925 		voice->extra = NULL;
926 	}
927 	return 0;
928 }
929 
930 /*---------------------------------------------------------------------------
931    snd_trident_playback_prepare
932 
933    Description: Prepare playback device for playback.
934 
935    Parameters:  substream  - PCM substream class
936 
937    Returns:     Error status
938 
939   ---------------------------------------------------------------------------*/
940 
941 static int snd_trident_playback_prepare(struct snd_pcm_substream *substream)
942 {
943 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
944 	struct snd_pcm_runtime *runtime = substream->runtime;
945 	struct snd_trident_voice *voice = runtime->private_data;
946 	struct snd_trident_voice *evoice = voice->extra;
947 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
948 
949 	spin_lock_irq(&trident->reg_lock);
950 
951 	/* set delta (rate) value */
952 	voice->Delta = snd_trident_convert_rate(runtime->rate);
953 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
954 
955 	/* set Loop Begin Address */
956 	if (voice->memblk)
957 		voice->LBA = voice->memblk->offset;
958 	else
959 		voice->LBA = runtime->dma_addr;
960 
961 	voice->CSO = 0;
962 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
963 	voice->CTRL = snd_trident_control_mode(substream);
964 	voice->FMC = 3;
965 	voice->GVSel = 1;
966 	voice->EC = 0;
967 	voice->Alpha = 0;
968 	voice->FMS = 0;
969 	voice->Vol = mix->vol;
970 	voice->RVol = mix->rvol;
971 	voice->CVol = mix->cvol;
972 	voice->Pan = mix->pan;
973 	voice->Attribute = 0;
974 #if 0
975 	voice->Attribute = (1<<(30-16))|(2<<(26-16))|
976 			   (0<<(24-16))|(0x1f<<(19-16));
977 #else
978 	voice->Attribute = 0;
979 #endif
980 
981 	snd_trident_write_voice_regs(trident, voice);
982 
983 	if (evoice != NULL) {
984 		evoice->Delta = voice->Delta;
985 		evoice->spurious_threshold = voice->spurious_threshold;
986 		evoice->LBA = voice->LBA;
987 		evoice->CSO = 0;
988 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
989 		evoice->CTRL = voice->CTRL;
990 		evoice->FMC = 3;
991 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
992 		evoice->EC = 0;
993 		evoice->Alpha = 0;
994 		evoice->FMS = 0;
995 		evoice->Vol = 0x3ff;			/* mute */
996 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
997 		evoice->Pan = 0x7f;			/* mute */
998 #if 0
999 		evoice->Attribute = (1<<(30-16))|(2<<(26-16))|
1000 				    (0<<(24-16))|(0x1f<<(19-16));
1001 #else
1002 		evoice->Attribute = 0;
1003 #endif
1004 		snd_trident_write_voice_regs(trident, evoice);
1005 		evoice->isync2 = 1;
1006 		evoice->isync_mark = runtime->period_size;
1007 		evoice->ESO = (runtime->period_size * 2) - 1;
1008 	}
1009 
1010 	spin_unlock_irq(&trident->reg_lock);
1011 
1012 	return 0;
1013 }
1014 
1015 /*---------------------------------------------------------------------------
1016    snd_trident_capture_hw_params
1017 
1018    Description: Set the hardware parameters for the capture device.
1019 
1020    Parameters:  substream  - PCM substream class
1021 		hw_params  - hardware parameters
1022 
1023    Returns:     Error status
1024 
1025   ---------------------------------------------------------------------------*/
1026 
1027 static int snd_trident_capture_hw_params(struct snd_pcm_substream *substream,
1028 					 struct snd_pcm_hw_params *hw_params)
1029 {
1030 	return snd_trident_allocate_pcm_mem(substream, hw_params);
1031 }
1032 
1033 /*---------------------------------------------------------------------------
1034    snd_trident_capture_prepare
1035 
1036    Description: Prepare capture device for playback.
1037 
1038    Parameters:  substream  - PCM substream class
1039 
1040    Returns:     Error status
1041 
1042   ---------------------------------------------------------------------------*/
1043 
1044 static int snd_trident_capture_prepare(struct snd_pcm_substream *substream)
1045 {
1046 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1047 	struct snd_pcm_runtime *runtime = substream->runtime;
1048 	struct snd_trident_voice *voice = runtime->private_data;
1049 	unsigned int val, ESO_bytes;
1050 
1051 	spin_lock_irq(&trident->reg_lock);
1052 
1053 	// Initilize the channel and set channel Mode
1054 	outb(0, TRID_REG(trident, LEGACY_DMAR15));
1055 
1056 	// Set DMA channel operation mode register
1057 	outb(0x54, TRID_REG(trident, LEGACY_DMAR11));
1058 
1059 	// Set channel buffer Address, DMAR0 expects contiguous PCI memory area
1060 	voice->LBA = runtime->dma_addr;
1061 	outl(voice->LBA, TRID_REG(trident, LEGACY_DMAR0));
1062 	if (voice->memblk)
1063 		voice->LBA = voice->memblk->offset;
1064 
1065 	// set ESO
1066 	ESO_bytes = snd_pcm_lib_buffer_bytes(substream) - 1;
1067 	outb((ESO_bytes & 0x00ff0000) >> 16, TRID_REG(trident, LEGACY_DMAR6));
1068 	outw((ESO_bytes & 0x0000ffff), TRID_REG(trident, LEGACY_DMAR4));
1069 	ESO_bytes++;
1070 
1071 	// Set channel sample rate, 4.12 format
1072 	val = (((unsigned int) 48000L << 12) + (runtime->rate/2)) / runtime->rate;
1073 	outw(val, TRID_REG(trident, T4D_SBDELTA_DELTA_R));
1074 
1075 	// Set channel interrupt blk length
1076 	if (snd_pcm_format_width(runtime->format) == 16) {
1077 		val = (unsigned short) ((ESO_bytes >> 1) - 1);
1078 	} else {
1079 		val = (unsigned short) (ESO_bytes - 1);
1080 	}
1081 
1082 	outl((val << 16) | val, TRID_REG(trident, T4D_SBBL_SBCL));
1083 
1084 	// Right now, set format and start to run captureing,
1085 	// continuous run loop enable.
1086 	trident->bDMAStart = 0x19;	// 0001 1001b
1087 
1088 	if (snd_pcm_format_width(runtime->format) == 16)
1089 		trident->bDMAStart |= 0x80;
1090 	if (snd_pcm_format_signed(runtime->format))
1091 		trident->bDMAStart |= 0x20;
1092 	if (runtime->channels > 1)
1093 		trident->bDMAStart |= 0x40;
1094 
1095 	// Prepare capture intr channel
1096 
1097 	voice->Delta = snd_trident_convert_rate(runtime->rate);
1098 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1099 	voice->isync = 1;
1100 	voice->isync_mark = runtime->period_size;
1101 	voice->isync_max = runtime->buffer_size;
1102 
1103 	// Set voice parameters
1104 	voice->CSO = 0;
1105 	voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1106 	voice->CTRL = snd_trident_control_mode(substream);
1107 	voice->FMC = 3;
1108 	voice->RVol = 0x7f;
1109 	voice->CVol = 0x7f;
1110 	voice->GVSel = 1;
1111 	voice->Pan = 0x7f;		/* mute */
1112 	voice->Vol = 0x3ff;		/* mute */
1113 	voice->EC = 0;
1114 	voice->Alpha = 0;
1115 	voice->FMS = 0;
1116 	voice->Attribute = 0;
1117 
1118 	snd_trident_write_voice_regs(trident, voice);
1119 
1120 	spin_unlock_irq(&trident->reg_lock);
1121 	return 0;
1122 }
1123 
1124 /*---------------------------------------------------------------------------
1125    snd_trident_si7018_capture_hw_params
1126 
1127    Description: Set the hardware parameters for the capture device.
1128 
1129    Parameters:  substream  - PCM substream class
1130 		hw_params  - hardware parameters
1131 
1132    Returns:     Error status
1133 
1134   ---------------------------------------------------------------------------*/
1135 
1136 static int snd_trident_si7018_capture_hw_params(struct snd_pcm_substream *substream,
1137 						struct snd_pcm_hw_params *hw_params)
1138 {
1139 	int err;
1140 
1141 	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
1142 		return err;
1143 
1144 	return snd_trident_allocate_evoice(substream, hw_params);
1145 }
1146 
1147 /*---------------------------------------------------------------------------
1148    snd_trident_si7018_capture_hw_free
1149 
1150    Description: Release the hardware resources for the capture device.
1151 
1152    Parameters:  substream  - PCM substream class
1153 
1154    Returns:     Error status
1155 
1156   ---------------------------------------------------------------------------*/
1157 
1158 static int snd_trident_si7018_capture_hw_free(struct snd_pcm_substream *substream)
1159 {
1160 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1161 	struct snd_pcm_runtime *runtime = substream->runtime;
1162 	struct snd_trident_voice *voice = runtime->private_data;
1163 	struct snd_trident_voice *evoice = voice ? voice->extra : NULL;
1164 
1165 	snd_pcm_lib_free_pages(substream);
1166 	if (evoice != NULL) {
1167 		snd_trident_free_voice(trident, evoice);
1168 		voice->extra = NULL;
1169 	}
1170 	return 0;
1171 }
1172 
1173 /*---------------------------------------------------------------------------
1174    snd_trident_si7018_capture_prepare
1175 
1176    Description: Prepare capture device for playback.
1177 
1178    Parameters:  substream  - PCM substream class
1179 
1180    Returns:     Error status
1181 
1182   ---------------------------------------------------------------------------*/
1183 
1184 static int snd_trident_si7018_capture_prepare(struct snd_pcm_substream *substream)
1185 {
1186 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1187 	struct snd_pcm_runtime *runtime = substream->runtime;
1188 	struct snd_trident_voice *voice = runtime->private_data;
1189 	struct snd_trident_voice *evoice = voice->extra;
1190 
1191 	spin_lock_irq(&trident->reg_lock);
1192 
1193 	voice->LBA = runtime->dma_addr;
1194 	voice->Delta = snd_trident_convert_adc_rate(runtime->rate);
1195 	voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1196 
1197 	// Set voice parameters
1198 	voice->CSO = 0;
1199 	voice->ESO = runtime->buffer_size - 1;		/* in samples */
1200 	voice->CTRL = snd_trident_control_mode(substream);
1201 	voice->FMC = 0;
1202 	voice->RVol = 0;
1203 	voice->CVol = 0;
1204 	voice->GVSel = 1;
1205 	voice->Pan = T4D_DEFAULT_PCM_PAN;
1206 	voice->Vol = 0;
1207 	voice->EC = 0;
1208 	voice->Alpha = 0;
1209 	voice->FMS = 0;
1210 
1211 	voice->Attribute = (2 << (30-16)) |
1212 			   (2 << (26-16)) |
1213 			   (2 << (24-16)) |
1214 			   (1 << (23-16));
1215 
1216 	snd_trident_write_voice_regs(trident, voice);
1217 
1218 	if (evoice != NULL) {
1219 		evoice->Delta = snd_trident_convert_rate(runtime->rate);
1220 		evoice->spurious_threshold = voice->spurious_threshold;
1221 		evoice->LBA = voice->LBA;
1222 		evoice->CSO = 0;
1223 		evoice->ESO = (runtime->period_size * 2) + 20 - 1; /* in samples, 20 means correction */
1224 		evoice->CTRL = voice->CTRL;
1225 		evoice->FMC = 3;
1226 		evoice->GVSel = 0;
1227 		evoice->EC = 0;
1228 		evoice->Alpha = 0;
1229 		evoice->FMS = 0;
1230 		evoice->Vol = 0x3ff;			/* mute */
1231 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1232 		evoice->Pan = 0x7f;			/* mute */
1233 		evoice->Attribute = 0;
1234 		snd_trident_write_voice_regs(trident, evoice);
1235 		evoice->isync2 = 1;
1236 		evoice->isync_mark = runtime->period_size;
1237 		evoice->ESO = (runtime->period_size * 2) - 1;
1238 	}
1239 
1240 	spin_unlock_irq(&trident->reg_lock);
1241 	return 0;
1242 }
1243 
1244 /*---------------------------------------------------------------------------
1245    snd_trident_foldback_prepare
1246 
1247    Description: Prepare foldback capture device for playback.
1248 
1249    Parameters:  substream  - PCM substream class
1250 
1251    Returns:     Error status
1252 
1253   ---------------------------------------------------------------------------*/
1254 
1255 static int snd_trident_foldback_prepare(struct snd_pcm_substream *substream)
1256 {
1257 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1258 	struct snd_pcm_runtime *runtime = substream->runtime;
1259 	struct snd_trident_voice *voice = runtime->private_data;
1260 	struct snd_trident_voice *evoice = voice->extra;
1261 
1262 	spin_lock_irq(&trident->reg_lock);
1263 
1264 	/* Set channel buffer Address */
1265 	if (voice->memblk)
1266 		voice->LBA = voice->memblk->offset;
1267 	else
1268 		voice->LBA = runtime->dma_addr;
1269 
1270 	/* set target ESO for channel */
1271 	voice->ESO = runtime->buffer_size - 1;	/* in samples */
1272 
1273 	/* set sample rate */
1274 	voice->Delta = 0x1000;
1275 	voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1276 
1277 	voice->CSO = 0;
1278 	voice->CTRL = snd_trident_control_mode(substream);
1279 	voice->FMC = 3;
1280 	voice->RVol = 0x7f;
1281 	voice->CVol = 0x7f;
1282 	voice->GVSel = 1;
1283 	voice->Pan = 0x7f;	/* mute */
1284 	voice->Vol = 0x3ff;	/* mute */
1285 	voice->EC = 0;
1286 	voice->Alpha = 0;
1287 	voice->FMS = 0;
1288 	voice->Attribute = 0;
1289 
1290 	/* set up capture channel */
1291 	outb(((voice->number & 0x3f) | 0x80), TRID_REG(trident, T4D_RCI + voice->foldback_chan));
1292 
1293 	snd_trident_write_voice_regs(trident, voice);
1294 
1295 	if (evoice != NULL) {
1296 		evoice->Delta = voice->Delta;
1297 		evoice->spurious_threshold = voice->spurious_threshold;
1298 		evoice->LBA = voice->LBA;
1299 		evoice->CSO = 0;
1300 		evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1301 		evoice->CTRL = voice->CTRL;
1302 		evoice->FMC = 3;
1303 		evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1304 		evoice->EC = 0;
1305 		evoice->Alpha = 0;
1306 		evoice->FMS = 0;
1307 		evoice->Vol = 0x3ff;			/* mute */
1308 		evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1309 		evoice->Pan = 0x7f;			/* mute */
1310 		evoice->Attribute = 0;
1311 		snd_trident_write_voice_regs(trident, evoice);
1312 		evoice->isync2 = 1;
1313 		evoice->isync_mark = runtime->period_size;
1314 		evoice->ESO = (runtime->period_size * 2) - 1;
1315 	}
1316 
1317 	spin_unlock_irq(&trident->reg_lock);
1318 	return 0;
1319 }
1320 
1321 /*---------------------------------------------------------------------------
1322    snd_trident_spdif_hw_params
1323 
1324    Description: Set the hardware parameters for the spdif device.
1325 
1326    Parameters:  substream  - PCM substream class
1327 		hw_params  - hardware parameters
1328 
1329    Returns:     Error status
1330 
1331   ---------------------------------------------------------------------------*/
1332 
1333 static int snd_trident_spdif_hw_params(struct snd_pcm_substream *substream,
1334 				       struct snd_pcm_hw_params *hw_params)
1335 {
1336 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1337 	unsigned int old_bits = 0, change = 0;
1338 	int err;
1339 
1340 	err = snd_trident_allocate_pcm_mem(substream, hw_params);
1341 	if (err < 0)
1342 		return err;
1343 
1344 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1345 		err = snd_trident_allocate_evoice(substream, hw_params);
1346 		if (err < 0)
1347 			return err;
1348 	}
1349 
1350 	/* prepare SPDIF channel */
1351 	spin_lock_irq(&trident->reg_lock);
1352 	old_bits = trident->spdif_pcm_bits;
1353 	if (old_bits & IEC958_AES0_PROFESSIONAL)
1354 		trident->spdif_pcm_bits &= ~IEC958_AES0_PRO_FS;
1355 	else
1356 		trident->spdif_pcm_bits &= ~(IEC958_AES3_CON_FS << 24);
1357 	if (params_rate(hw_params) >= 48000) {
1358 		trident->spdif_pcm_ctrl = 0x3c;	// 48000 Hz
1359 		trident->spdif_pcm_bits |=
1360 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1361 				IEC958_AES0_PRO_FS_48000 :
1362 				(IEC958_AES3_CON_FS_48000 << 24);
1363 	}
1364 	else if (params_rate(hw_params) >= 44100) {
1365 		trident->spdif_pcm_ctrl = 0x3e;	// 44100 Hz
1366 		trident->spdif_pcm_bits |=
1367 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1368 				IEC958_AES0_PRO_FS_44100 :
1369 				(IEC958_AES3_CON_FS_44100 << 24);
1370 	}
1371 	else {
1372 		trident->spdif_pcm_ctrl = 0x3d;	// 32000 Hz
1373 		trident->spdif_pcm_bits |=
1374 			trident->spdif_bits & IEC958_AES0_PROFESSIONAL ?
1375 				IEC958_AES0_PRO_FS_32000 :
1376 				(IEC958_AES3_CON_FS_32000 << 24);
1377 	}
1378 	change = old_bits != trident->spdif_pcm_bits;
1379 	spin_unlock_irq(&trident->reg_lock);
1380 
1381 	if (change)
1382 		snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE, &trident->spdif_pcm_ctl->id);
1383 
1384 	return 0;
1385 }
1386 
1387 /*---------------------------------------------------------------------------
1388    snd_trident_spdif_prepare
1389 
1390    Description: Prepare SPDIF device for playback.
1391 
1392    Parameters:  substream  - PCM substream class
1393 
1394    Returns:     Error status
1395 
1396   ---------------------------------------------------------------------------*/
1397 
1398 static int snd_trident_spdif_prepare(struct snd_pcm_substream *substream)
1399 {
1400 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1401 	struct snd_pcm_runtime *runtime = substream->runtime;
1402 	struct snd_trident_voice *voice = runtime->private_data;
1403 	struct snd_trident_voice *evoice = voice->extra;
1404 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[substream->number];
1405 	unsigned int RESO, LBAO;
1406 	unsigned int temp;
1407 
1408 	spin_lock_irq(&trident->reg_lock);
1409 
1410 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1411 
1412 		/* set delta (rate) value */
1413 		voice->Delta = snd_trident_convert_rate(runtime->rate);
1414 		voice->spurious_threshold = snd_trident_spurious_threshold(runtime->rate, runtime->period_size);
1415 
1416 		/* set Loop Back Address */
1417 		LBAO = runtime->dma_addr;
1418 		if (voice->memblk)
1419 			voice->LBA = voice->memblk->offset;
1420 		else
1421 			voice->LBA = LBAO;
1422 
1423 		voice->isync = 1;
1424 		voice->isync3 = 1;
1425 		voice->isync_mark = runtime->period_size;
1426 		voice->isync_max = runtime->buffer_size;
1427 
1428 		/* set target ESO for channel */
1429 		RESO = runtime->buffer_size - 1;
1430 		voice->ESO = voice->isync_ESO = (runtime->period_size * 2) + 6 - 1;
1431 
1432 		/* set ctrl mode */
1433 		voice->CTRL = snd_trident_control_mode(substream);
1434 
1435 		voice->FMC = 3;
1436 		voice->RVol = 0x7f;
1437 		voice->CVol = 0x7f;
1438 		voice->GVSel = 1;
1439 		voice->Pan = 0x7f;
1440 		voice->Vol = 0x3ff;
1441 		voice->EC = 0;
1442 		voice->CSO = 0;
1443 		voice->Alpha = 0;
1444 		voice->FMS = 0;
1445 		voice->Attribute = 0;
1446 
1447 		/* prepare surrogate IRQ channel */
1448 		snd_trident_write_voice_regs(trident, voice);
1449 
1450 		outw((RESO & 0xffff), TRID_REG(trident, NX_SPESO));
1451 		outb((RESO >> 16), TRID_REG(trident, NX_SPESO + 2));
1452 		outl((LBAO & 0xfffffffc), TRID_REG(trident, NX_SPLBA));
1453 		outw((voice->CSO & 0xffff), TRID_REG(trident, NX_SPCTRL_SPCSO));
1454 		outb((voice->CSO >> 16), TRID_REG(trident, NX_SPCTRL_SPCSO + 2));
1455 
1456 		/* set SPDIF setting */
1457 		outb(trident->spdif_pcm_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1458 		outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1459 
1460 	} else {	/* SiS */
1461 
1462 		/* set delta (rate) value */
1463 		voice->Delta = 0x800;
1464 		voice->spurious_threshold = snd_trident_spurious_threshold(48000, runtime->period_size);
1465 
1466 		/* set Loop Begin Address */
1467 		if (voice->memblk)
1468 			voice->LBA = voice->memblk->offset;
1469 		else
1470 			voice->LBA = runtime->dma_addr;
1471 
1472 		voice->CSO = 0;
1473 		voice->ESO = runtime->buffer_size - 1;	/* in samples */
1474 		voice->CTRL = snd_trident_control_mode(substream);
1475 		voice->FMC = 3;
1476 		voice->GVSel = 1;
1477 		voice->EC = 0;
1478 		voice->Alpha = 0;
1479 		voice->FMS = 0;
1480 		voice->Vol = mix->vol;
1481 		voice->RVol = mix->rvol;
1482 		voice->CVol = mix->cvol;
1483 		voice->Pan = mix->pan;
1484 		voice->Attribute = (1<<(30-16))|(7<<(26-16))|
1485 				   (0<<(24-16))|(0<<(19-16));
1486 
1487 		snd_trident_write_voice_regs(trident, voice);
1488 
1489 		if (evoice != NULL) {
1490 			evoice->Delta = voice->Delta;
1491 			evoice->spurious_threshold = voice->spurious_threshold;
1492 			evoice->LBA = voice->LBA;
1493 			evoice->CSO = 0;
1494 			evoice->ESO = (runtime->period_size * 2) + 4 - 1; /* in samples */
1495 			evoice->CTRL = voice->CTRL;
1496 			evoice->FMC = 3;
1497 			evoice->GVSel = trident->device == TRIDENT_DEVICE_ID_SI7018 ? 0 : 1;
1498 			evoice->EC = 0;
1499 			evoice->Alpha = 0;
1500 			evoice->FMS = 0;
1501 			evoice->Vol = 0x3ff;			/* mute */
1502 			evoice->RVol = evoice->CVol = 0x7f;	/* mute */
1503 			evoice->Pan = 0x7f;			/* mute */
1504 			evoice->Attribute = 0;
1505 			snd_trident_write_voice_regs(trident, evoice);
1506 			evoice->isync2 = 1;
1507 			evoice->isync_mark = runtime->period_size;
1508 			evoice->ESO = (runtime->period_size * 2) - 1;
1509 		}
1510 
1511 		outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1512 		temp = inl(TRID_REG(trident, T4D_LFO_GC_CIR));
1513 		temp &= ~(1<<19);
1514 		outl(temp, TRID_REG(trident, T4D_LFO_GC_CIR));
1515 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1516 		temp |= SPDIF_EN;
1517 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1518 	}
1519 
1520 	spin_unlock_irq(&trident->reg_lock);
1521 
1522 	return 0;
1523 }
1524 
1525 /*---------------------------------------------------------------------------
1526    snd_trident_trigger
1527 
1528    Description: Start/stop devices
1529 
1530    Parameters:  substream  - PCM substream class
1531    		cmd	- trigger command (STOP, GO)
1532 
1533    Returns:     Error status
1534 
1535   ---------------------------------------------------------------------------*/
1536 
1537 static int snd_trident_trigger(struct snd_pcm_substream *substream,
1538 			       int cmd)
1539 
1540 {
1541 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1542 	struct snd_pcm_substream *s;
1543 	unsigned int what, whati, capture_flag, spdif_flag;
1544 	struct snd_trident_voice *voice, *evoice;
1545 	unsigned int val, go;
1546 
1547 	switch (cmd) {
1548 	case SNDRV_PCM_TRIGGER_START:
1549 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1550 	case SNDRV_PCM_TRIGGER_RESUME:
1551 		go = 1;
1552 		break;
1553 	case SNDRV_PCM_TRIGGER_STOP:
1554 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1555 	case SNDRV_PCM_TRIGGER_SUSPEND:
1556 		go = 0;
1557 		break;
1558 	default:
1559 		return -EINVAL;
1560 	}
1561 	what = whati = capture_flag = spdif_flag = 0;
1562 	spin_lock(&trident->reg_lock);
1563 	val = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
1564 	snd_pcm_group_for_each_entry(s, substream) {
1565 		if ((struct snd_trident *) snd_pcm_substream_chip(s) == trident) {
1566 			voice = s->runtime->private_data;
1567 			evoice = voice->extra;
1568 			what |= 1 << (voice->number & 0x1f);
1569 			if (evoice == NULL) {
1570 				whati |= 1 << (voice->number & 0x1f);
1571 			} else {
1572 				what |= 1 << (evoice->number & 0x1f);
1573 				whati |= 1 << (evoice->number & 0x1f);
1574 				if (go)
1575 					evoice->stimer = val;
1576 			}
1577 			if (go) {
1578 				voice->running = 1;
1579 				voice->stimer = val;
1580 			} else {
1581 				voice->running = 0;
1582 			}
1583 			snd_pcm_trigger_done(s, substream);
1584 			if (voice->capture)
1585 				capture_flag = 1;
1586 			if (voice->spdif)
1587 				spdif_flag = 1;
1588 		}
1589 	}
1590 	if (spdif_flag) {
1591 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1592 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
1593 			val = trident->spdif_pcm_ctrl;
1594 			if (!go)
1595 				val &= ~(0x28);
1596 			outb(val, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1597 		} else {
1598 			outl(trident->spdif_pcm_bits, TRID_REG(trident, SI_SPDIF_CS));
1599 			val = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) | SPDIF_EN;
1600 			outl(val, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1601 		}
1602 	}
1603 	if (!go)
1604 		outl(what, TRID_REG(trident, T4D_STOP_B));
1605 	val = inl(TRID_REG(trident, T4D_AINTEN_B));
1606 	if (go) {
1607 		val |= whati;
1608 	} else {
1609 		val &= ~whati;
1610 	}
1611 	outl(val, TRID_REG(trident, T4D_AINTEN_B));
1612 	if (go) {
1613 		outl(what, TRID_REG(trident, T4D_START_B));
1614 
1615 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1616 			outb(trident->bDMAStart, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1617 	} else {
1618 		if (capture_flag && trident->device != TRIDENT_DEVICE_ID_SI7018)
1619 			outb(0x00, TRID_REG(trident, T4D_SBCTRL_SBE2R_SBDD));
1620 	}
1621 	spin_unlock(&trident->reg_lock);
1622 	return 0;
1623 }
1624 
1625 /*---------------------------------------------------------------------------
1626    snd_trident_playback_pointer
1627 
1628    Description: This routine return the playback position
1629 
1630    Parameters:	substream  - PCM substream class
1631 
1632    Returns:     position of buffer
1633 
1634   ---------------------------------------------------------------------------*/
1635 
1636 static snd_pcm_uframes_t snd_trident_playback_pointer(struct snd_pcm_substream *substream)
1637 {
1638 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1639 	struct snd_pcm_runtime *runtime = substream->runtime;
1640 	struct snd_trident_voice *voice = runtime->private_data;
1641 	unsigned int cso;
1642 
1643 	if (!voice->running)
1644 		return 0;
1645 
1646 	spin_lock(&trident->reg_lock);
1647 
1648 	outb(voice->number, TRID_REG(trident, T4D_LFO_GC_CIR));
1649 
1650 	if (trident->device != TRIDENT_DEVICE_ID_NX) {
1651 		cso = inw(TRID_REG(trident, CH_DX_CSO_ALPHA_FMS + 2));
1652 	} else {		// ID_4DWAVE_NX
1653 		cso = (unsigned int) inl(TRID_REG(trident, CH_NX_DELTA_CSO)) & 0x00ffffff;
1654 	}
1655 
1656 	spin_unlock(&trident->reg_lock);
1657 
1658 	if (cso >= runtime->buffer_size)
1659 		cso = 0;
1660 
1661 	return cso;
1662 }
1663 
1664 /*---------------------------------------------------------------------------
1665    snd_trident_capture_pointer
1666 
1667    Description: This routine return the capture position
1668 
1669    Parameters:   pcm1    - PCM device class
1670 
1671    Returns:     position of buffer
1672 
1673   ---------------------------------------------------------------------------*/
1674 
1675 static snd_pcm_uframes_t snd_trident_capture_pointer(struct snd_pcm_substream *substream)
1676 {
1677 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1678 	struct snd_pcm_runtime *runtime = substream->runtime;
1679 	struct snd_trident_voice *voice = runtime->private_data;
1680 	unsigned int result;
1681 
1682 	if (!voice->running)
1683 		return 0;
1684 
1685 	result = inw(TRID_REG(trident, T4D_SBBL_SBCL));
1686 	if (runtime->channels > 1)
1687 		result >>= 1;
1688 	if (result > 0)
1689 		result = runtime->buffer_size - result;
1690 
1691 	return result;
1692 }
1693 
1694 /*---------------------------------------------------------------------------
1695    snd_trident_spdif_pointer
1696 
1697    Description: This routine return the SPDIF playback position
1698 
1699    Parameters:	substream  - PCM substream class
1700 
1701    Returns:     position of buffer
1702 
1703   ---------------------------------------------------------------------------*/
1704 
1705 static snd_pcm_uframes_t snd_trident_spdif_pointer(struct snd_pcm_substream *substream)
1706 {
1707 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1708 	struct snd_pcm_runtime *runtime = substream->runtime;
1709 	struct snd_trident_voice *voice = runtime->private_data;
1710 	unsigned int result;
1711 
1712 	if (!voice->running)
1713 		return 0;
1714 
1715 	result = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
1716 
1717 	return result;
1718 }
1719 
1720 /*
1721  *  Playback support device description
1722  */
1723 
1724 static struct snd_pcm_hardware snd_trident_playback =
1725 {
1726 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1727 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1728 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1729 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1730 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1731 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1732 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1733 	.rate_min =		4000,
1734 	.rate_max =		48000,
1735 	.channels_min =		1,
1736 	.channels_max =		2,
1737 	.buffer_bytes_max =	(256*1024),
1738 	.period_bytes_min =	64,
1739 	.period_bytes_max =	(256*1024),
1740 	.periods_min =		1,
1741 	.periods_max =		1024,
1742 	.fifo_size =		0,
1743 };
1744 
1745 /*
1746  *  Capture support device description
1747  */
1748 
1749 static struct snd_pcm_hardware snd_trident_capture =
1750 {
1751 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1752 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1753 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1754 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1755 	.formats =		(SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1756 				 SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U16_LE),
1757 	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
1758 	.rate_min =		4000,
1759 	.rate_max =		48000,
1760 	.channels_min =		1,
1761 	.channels_max =		2,
1762 	.buffer_bytes_max =	(128*1024),
1763 	.period_bytes_min =	64,
1764 	.period_bytes_max =	(128*1024),
1765 	.periods_min =		1,
1766 	.periods_max =		1024,
1767 	.fifo_size =		0,
1768 };
1769 
1770 /*
1771  *  Foldback capture support device description
1772  */
1773 
1774 static struct snd_pcm_hardware snd_trident_foldback =
1775 {
1776 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1777 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1778 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1779 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1780 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1781 	.rates =		SNDRV_PCM_RATE_48000,
1782 	.rate_min =		48000,
1783 	.rate_max =		48000,
1784 	.channels_min =		2,
1785 	.channels_max =		2,
1786 	.buffer_bytes_max =	(128*1024),
1787 	.period_bytes_min =	64,
1788 	.period_bytes_max =	(128*1024),
1789 	.periods_min =		1,
1790 	.periods_max =		1024,
1791 	.fifo_size =		0,
1792 };
1793 
1794 /*
1795  *  SPDIF playback support device description
1796  */
1797 
1798 static struct snd_pcm_hardware snd_trident_spdif =
1799 {
1800 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1801 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1802 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1803 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1804 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1805 	.rates =		(SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
1806 				 SNDRV_PCM_RATE_48000),
1807 	.rate_min =		32000,
1808 	.rate_max =		48000,
1809 	.channels_min =		2,
1810 	.channels_max =		2,
1811 	.buffer_bytes_max =	(128*1024),
1812 	.period_bytes_min =	64,
1813 	.period_bytes_max =	(128*1024),
1814 	.periods_min =		1,
1815 	.periods_max =		1024,
1816 	.fifo_size =		0,
1817 };
1818 
1819 static struct snd_pcm_hardware snd_trident_spdif_7018 =
1820 {
1821 	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1822 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
1823 				 SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START |
1824 				 SNDRV_PCM_INFO_PAUSE /* | SNDRV_PCM_INFO_RESUME */),
1825 	.formats =		SNDRV_PCM_FMTBIT_S16_LE,
1826 	.rates =		SNDRV_PCM_RATE_48000,
1827 	.rate_min =		48000,
1828 	.rate_max =		48000,
1829 	.channels_min =		2,
1830 	.channels_max =		2,
1831 	.buffer_bytes_max =	(128*1024),
1832 	.period_bytes_min =	64,
1833 	.period_bytes_max =	(128*1024),
1834 	.periods_min =		1,
1835 	.periods_max =		1024,
1836 	.fifo_size =		0,
1837 };
1838 
1839 static void snd_trident_pcm_free_substream(struct snd_pcm_runtime *runtime)
1840 {
1841 	struct snd_trident_voice *voice = runtime->private_data;
1842 	struct snd_trident *trident;
1843 
1844 	if (voice) {
1845 		trident = voice->trident;
1846 		snd_trident_free_voice(trident, voice);
1847 	}
1848 }
1849 
1850 static int snd_trident_playback_open(struct snd_pcm_substream *substream)
1851 {
1852 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1853 	struct snd_pcm_runtime *runtime = substream->runtime;
1854 	struct snd_trident_voice *voice;
1855 
1856 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1857 	if (voice == NULL)
1858 		return -EAGAIN;
1859 	snd_trident_pcm_mixer_build(trident, voice, substream);
1860 	voice->substream = substream;
1861 	runtime->private_data = voice;
1862 	runtime->private_free = snd_trident_pcm_free_substream;
1863 	runtime->hw = snd_trident_playback;
1864 	snd_pcm_set_sync(substream);
1865 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1866 	return 0;
1867 }
1868 
1869 /*---------------------------------------------------------------------------
1870    snd_trident_playback_close
1871 
1872    Description: This routine will close the 4DWave playback device. For now
1873                 we will simply free the dma transfer buffer.
1874 
1875    Parameters:	substream  - PCM substream class
1876 
1877   ---------------------------------------------------------------------------*/
1878 static int snd_trident_playback_close(struct snd_pcm_substream *substream)
1879 {
1880 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1881 	struct snd_pcm_runtime *runtime = substream->runtime;
1882 	struct snd_trident_voice *voice = runtime->private_data;
1883 
1884 	snd_trident_pcm_mixer_free(trident, voice, substream);
1885 	return 0;
1886 }
1887 
1888 /*---------------------------------------------------------------------------
1889    snd_trident_spdif_open
1890 
1891    Description: This routine will open the 4DWave SPDIF device.
1892 
1893    Parameters:	substream  - PCM substream class
1894 
1895    Returns:     status  - success or failure flag
1896 
1897   ---------------------------------------------------------------------------*/
1898 
1899 static int snd_trident_spdif_open(struct snd_pcm_substream *substream)
1900 {
1901 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1902 	struct snd_trident_voice *voice;
1903 	struct snd_pcm_runtime *runtime = substream->runtime;
1904 
1905 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1906 	if (voice == NULL)
1907 		return -EAGAIN;
1908 	voice->spdif = 1;
1909 	voice->substream = substream;
1910 	spin_lock_irq(&trident->reg_lock);
1911 	trident->spdif_pcm_bits = trident->spdif_bits;
1912 	spin_unlock_irq(&trident->reg_lock);
1913 
1914 	runtime->private_data = voice;
1915 	runtime->private_free = snd_trident_pcm_free_substream;
1916 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
1917 		runtime->hw = snd_trident_spdif;
1918 	} else {
1919 		runtime->hw = snd_trident_spdif_7018;
1920 	}
1921 
1922 	trident->spdif_pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1923 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1924 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1925 
1926 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1927 	return 0;
1928 }
1929 
1930 
1931 /*---------------------------------------------------------------------------
1932    snd_trident_spdif_close
1933 
1934    Description: This routine will close the 4DWave SPDIF device.
1935 
1936    Parameters:	substream  - PCM substream class
1937 
1938   ---------------------------------------------------------------------------*/
1939 
1940 static int snd_trident_spdif_close(struct snd_pcm_substream *substream)
1941 {
1942 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1943 	unsigned int temp;
1944 
1945 	spin_lock_irq(&trident->reg_lock);
1946 	// restore default SPDIF setting
1947 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
1948 		outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
1949 		outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
1950 	} else {
1951 		outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
1952 		temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1953 		if (trident->spdif_ctrl) {
1954 			temp |= SPDIF_EN;
1955 		} else {
1956 			temp &= ~SPDIF_EN;
1957 		}
1958 		outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
1959 	}
1960 	spin_unlock_irq(&trident->reg_lock);
1961 	trident->spdif_pcm_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1962 	snd_ctl_notify(trident->card, SNDRV_CTL_EVENT_MASK_VALUE |
1963 		       SNDRV_CTL_EVENT_MASK_INFO, &trident->spdif_pcm_ctl->id);
1964 	return 0;
1965 }
1966 
1967 /*---------------------------------------------------------------------------
1968    snd_trident_capture_open
1969 
1970    Description: This routine will open the 4DWave capture device.
1971 
1972    Parameters:	substream  - PCM substream class
1973 
1974    Returns:     status  - success or failure flag
1975 
1976   ---------------------------------------------------------------------------*/
1977 
1978 static int snd_trident_capture_open(struct snd_pcm_substream *substream)
1979 {
1980 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
1981 	struct snd_trident_voice *voice;
1982 	struct snd_pcm_runtime *runtime = substream->runtime;
1983 
1984 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
1985 	if (voice == NULL)
1986 		return -EAGAIN;
1987 	voice->capture = 1;
1988 	voice->substream = substream;
1989 	runtime->private_data = voice;
1990 	runtime->private_free = snd_trident_pcm_free_substream;
1991 	runtime->hw = snd_trident_capture;
1992 	snd_pcm_set_sync(substream);
1993 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
1994 	return 0;
1995 }
1996 
1997 /*---------------------------------------------------------------------------
1998    snd_trident_capture_close
1999 
2000    Description: This routine will close the 4DWave capture device. For now
2001                 we will simply free the dma transfer buffer.
2002 
2003    Parameters:	substream  - PCM substream class
2004 
2005   ---------------------------------------------------------------------------*/
2006 static int snd_trident_capture_close(struct snd_pcm_substream *substream)
2007 {
2008 	return 0;
2009 }
2010 
2011 /*---------------------------------------------------------------------------
2012    snd_trident_foldback_open
2013 
2014    Description: This routine will open the 4DWave foldback capture device.
2015 
2016    Parameters:	substream  - PCM substream class
2017 
2018    Returns:     status  - success or failure flag
2019 
2020   ---------------------------------------------------------------------------*/
2021 
2022 static int snd_trident_foldback_open(struct snd_pcm_substream *substream)
2023 {
2024 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2025 	struct snd_trident_voice *voice;
2026 	struct snd_pcm_runtime *runtime = substream->runtime;
2027 
2028 	voice = snd_trident_alloc_voice(trident, SNDRV_TRIDENT_VOICE_TYPE_PCM, 0, 0);
2029 	if (voice == NULL)
2030 		return -EAGAIN;
2031 	voice->foldback_chan = substream->number;
2032 	voice->substream = substream;
2033 	runtime->private_data = voice;
2034 	runtime->private_free = snd_trident_pcm_free_substream;
2035 	runtime->hw = snd_trident_foldback;
2036 	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 64*1024);
2037 	return 0;
2038 }
2039 
2040 /*---------------------------------------------------------------------------
2041    snd_trident_foldback_close
2042 
2043    Description: This routine will close the 4DWave foldback capture device.
2044 		For now we will simply free the dma transfer buffer.
2045 
2046    Parameters:	substream  - PCM substream class
2047 
2048   ---------------------------------------------------------------------------*/
2049 static int snd_trident_foldback_close(struct snd_pcm_substream *substream)
2050 {
2051 	struct snd_trident *trident = snd_pcm_substream_chip(substream);
2052 	struct snd_trident_voice *voice;
2053 	struct snd_pcm_runtime *runtime = substream->runtime;
2054 	voice = runtime->private_data;
2055 
2056 	/* stop capture channel */
2057 	spin_lock_irq(&trident->reg_lock);
2058 	outb(0x00, TRID_REG(trident, T4D_RCI + voice->foldback_chan));
2059 	spin_unlock_irq(&trident->reg_lock);
2060 	return 0;
2061 }
2062 
2063 /*---------------------------------------------------------------------------
2064    PCM operations
2065   ---------------------------------------------------------------------------*/
2066 
2067 static struct snd_pcm_ops snd_trident_playback_ops = {
2068 	.open =		snd_trident_playback_open,
2069 	.close =	snd_trident_playback_close,
2070 	.ioctl =	snd_trident_ioctl,
2071 	.hw_params =	snd_trident_hw_params,
2072 	.hw_free =	snd_trident_hw_free,
2073 	.prepare =	snd_trident_playback_prepare,
2074 	.trigger =	snd_trident_trigger,
2075 	.pointer =	snd_trident_playback_pointer,
2076 };
2077 
2078 static struct snd_pcm_ops snd_trident_nx_playback_ops = {
2079 	.open =		snd_trident_playback_open,
2080 	.close =	snd_trident_playback_close,
2081 	.ioctl =	snd_trident_ioctl,
2082 	.hw_params =	snd_trident_hw_params,
2083 	.hw_free =	snd_trident_hw_free,
2084 	.prepare =	snd_trident_playback_prepare,
2085 	.trigger =	snd_trident_trigger,
2086 	.pointer =	snd_trident_playback_pointer,
2087 	.page =		snd_pcm_sgbuf_ops_page,
2088 };
2089 
2090 static struct snd_pcm_ops snd_trident_capture_ops = {
2091 	.open =		snd_trident_capture_open,
2092 	.close =	snd_trident_capture_close,
2093 	.ioctl =	snd_trident_ioctl,
2094 	.hw_params =	snd_trident_capture_hw_params,
2095 	.hw_free =	snd_trident_hw_free,
2096 	.prepare =	snd_trident_capture_prepare,
2097 	.trigger =	snd_trident_trigger,
2098 	.pointer =	snd_trident_capture_pointer,
2099 };
2100 
2101 static struct snd_pcm_ops snd_trident_si7018_capture_ops = {
2102 	.open =		snd_trident_capture_open,
2103 	.close =	snd_trident_capture_close,
2104 	.ioctl =	snd_trident_ioctl,
2105 	.hw_params =	snd_trident_si7018_capture_hw_params,
2106 	.hw_free =	snd_trident_si7018_capture_hw_free,
2107 	.prepare =	snd_trident_si7018_capture_prepare,
2108 	.trigger =	snd_trident_trigger,
2109 	.pointer =	snd_trident_playback_pointer,
2110 };
2111 
2112 static struct snd_pcm_ops snd_trident_foldback_ops = {
2113 	.open =		snd_trident_foldback_open,
2114 	.close =	snd_trident_foldback_close,
2115 	.ioctl =	snd_trident_ioctl,
2116 	.hw_params =	snd_trident_hw_params,
2117 	.hw_free =	snd_trident_hw_free,
2118 	.prepare =	snd_trident_foldback_prepare,
2119 	.trigger =	snd_trident_trigger,
2120 	.pointer =	snd_trident_playback_pointer,
2121 };
2122 
2123 static struct snd_pcm_ops snd_trident_nx_foldback_ops = {
2124 	.open =		snd_trident_foldback_open,
2125 	.close =	snd_trident_foldback_close,
2126 	.ioctl =	snd_trident_ioctl,
2127 	.hw_params =	snd_trident_hw_params,
2128 	.hw_free =	snd_trident_hw_free,
2129 	.prepare =	snd_trident_foldback_prepare,
2130 	.trigger =	snd_trident_trigger,
2131 	.pointer =	snd_trident_playback_pointer,
2132 	.page =		snd_pcm_sgbuf_ops_page,
2133 };
2134 
2135 static struct snd_pcm_ops snd_trident_spdif_ops = {
2136 	.open =		snd_trident_spdif_open,
2137 	.close =	snd_trident_spdif_close,
2138 	.ioctl =	snd_trident_ioctl,
2139 	.hw_params =	snd_trident_spdif_hw_params,
2140 	.hw_free =	snd_trident_hw_free,
2141 	.prepare =	snd_trident_spdif_prepare,
2142 	.trigger =	snd_trident_trigger,
2143 	.pointer =	snd_trident_spdif_pointer,
2144 };
2145 
2146 static struct snd_pcm_ops snd_trident_spdif_7018_ops = {
2147 	.open =		snd_trident_spdif_open,
2148 	.close =	snd_trident_spdif_close,
2149 	.ioctl =	snd_trident_ioctl,
2150 	.hw_params =	snd_trident_spdif_hw_params,
2151 	.hw_free =	snd_trident_hw_free,
2152 	.prepare =	snd_trident_spdif_prepare,
2153 	.trigger =	snd_trident_trigger,
2154 	.pointer =	snd_trident_playback_pointer,
2155 };
2156 
2157 /*---------------------------------------------------------------------------
2158    snd_trident_pcm
2159 
2160    Description: This routine registers the 4DWave device for PCM support.
2161 
2162    Parameters:  trident - pointer to target device class for 4DWave.
2163 
2164    Returns:     None
2165 
2166   ---------------------------------------------------------------------------*/
2167 
2168 int __devinit snd_trident_pcm(struct snd_trident * trident,
2169 			      int device, struct snd_pcm ** rpcm)
2170 {
2171 	struct snd_pcm *pcm;
2172 	int err;
2173 
2174 	if (rpcm)
2175 		*rpcm = NULL;
2176 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, trident->ChanPCM, 1, &pcm)) < 0)
2177 		return err;
2178 
2179 	pcm->private_data = trident;
2180 
2181 	if (trident->tlb.entries) {
2182 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_nx_playback_ops);
2183 	} else {
2184 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_playback_ops);
2185 	}
2186 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
2187 			trident->device != TRIDENT_DEVICE_ID_SI7018 ?
2188 			&snd_trident_capture_ops :
2189 			&snd_trident_si7018_capture_ops);
2190 
2191 	pcm->info_flags = 0;
2192 	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
2193 	strcpy(pcm->name, "Trident 4DWave");
2194 	trident->pcm = pcm;
2195 
2196 	if (trident->tlb.entries) {
2197 		struct snd_pcm_substream *substream;
2198 		for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
2199 			snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV_SG,
2200 						      snd_dma_pci_data(trident->pci),
2201 						      64*1024, 128*1024);
2202 		snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
2203 					      SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
2204 					      64*1024, 128*1024);
2205 	} else {
2206 		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2207 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2208 	}
2209 
2210 	if (rpcm)
2211 		*rpcm = pcm;
2212 	return 0;
2213 }
2214 
2215 /*---------------------------------------------------------------------------
2216    snd_trident_foldback_pcm
2217 
2218    Description: This routine registers the 4DWave device for foldback PCM support.
2219 
2220    Parameters:  trident - pointer to target device class for 4DWave.
2221 
2222    Returns:     None
2223 
2224   ---------------------------------------------------------------------------*/
2225 
2226 int __devinit snd_trident_foldback_pcm(struct snd_trident * trident,
2227 				       int device, struct snd_pcm ** rpcm)
2228 {
2229 	struct snd_pcm *foldback;
2230 	int err;
2231 	int num_chan = 3;
2232 	struct snd_pcm_substream *substream;
2233 
2234 	if (rpcm)
2235 		*rpcm = NULL;
2236 	if (trident->device == TRIDENT_DEVICE_ID_NX)
2237 		num_chan = 4;
2238 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx", device, 0, num_chan, &foldback)) < 0)
2239 		return err;
2240 
2241 	foldback->private_data = trident;
2242 	if (trident->tlb.entries)
2243 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_nx_foldback_ops);
2244 	else
2245 		snd_pcm_set_ops(foldback, SNDRV_PCM_STREAM_CAPTURE, &snd_trident_foldback_ops);
2246 	foldback->info_flags = 0;
2247 	strcpy(foldback->name, "Trident 4DWave");
2248 	substream = foldback->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
2249 	strcpy(substream->name, "Front Mixer");
2250 	substream = substream->next;
2251 	strcpy(substream->name, "Reverb Mixer");
2252 	substream = substream->next;
2253 	strcpy(substream->name, "Chorus Mixer");
2254 	if (num_chan == 4) {
2255 		substream = substream->next;
2256 		strcpy(substream->name, "Second AC'97 ADC");
2257 	}
2258 	trident->foldback = foldback;
2259 
2260 	if (trident->tlb.entries)
2261 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV_SG,
2262 						      snd_dma_pci_data(trident->pci), 0, 128*1024);
2263 	else
2264 		snd_pcm_lib_preallocate_pages_for_all(foldback, SNDRV_DMA_TYPE_DEV,
2265 						      snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2266 
2267 	if (rpcm)
2268 		*rpcm = foldback;
2269 	return 0;
2270 }
2271 
2272 /*---------------------------------------------------------------------------
2273    snd_trident_spdif
2274 
2275    Description: This routine registers the 4DWave-NX device for SPDIF support.
2276 
2277    Parameters:  trident - pointer to target device class for 4DWave-NX.
2278 
2279    Returns:     None
2280 
2281   ---------------------------------------------------------------------------*/
2282 
2283 int __devinit snd_trident_spdif_pcm(struct snd_trident * trident,
2284 				    int device, struct snd_pcm ** rpcm)
2285 {
2286 	struct snd_pcm *spdif;
2287 	int err;
2288 
2289 	if (rpcm)
2290 		*rpcm = NULL;
2291 	if ((err = snd_pcm_new(trident->card, "trident_dx_nx IEC958", device, 1, 0, &spdif)) < 0)
2292 		return err;
2293 
2294 	spdif->private_data = trident;
2295 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2296 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_ops);
2297 	} else {
2298 		snd_pcm_set_ops(spdif, SNDRV_PCM_STREAM_PLAYBACK, &snd_trident_spdif_7018_ops);
2299 	}
2300 	spdif->info_flags = 0;
2301 	strcpy(spdif->name, "Trident 4DWave IEC958");
2302 	trident->spdif = spdif;
2303 
2304 	snd_pcm_lib_preallocate_pages_for_all(spdif, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci), 64*1024, 128*1024);
2305 
2306 	if (rpcm)
2307 		*rpcm = spdif;
2308 	return 0;
2309 }
2310 
2311 /*
2312  *  Mixer part
2313  */
2314 
2315 
2316 /*---------------------------------------------------------------------------
2317     snd_trident_spdif_control
2318 
2319     Description: enable/disable S/PDIF out from ac97 mixer
2320   ---------------------------------------------------------------------------*/
2321 
2322 #define snd_trident_spdif_control_info	snd_ctl_boolean_mono_info
2323 
2324 static int snd_trident_spdif_control_get(struct snd_kcontrol *kcontrol,
2325 					 struct snd_ctl_elem_value *ucontrol)
2326 {
2327 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2328 	unsigned char val;
2329 
2330 	spin_lock_irq(&trident->reg_lock);
2331 	val = trident->spdif_ctrl;
2332 	ucontrol->value.integer.value[0] = val == kcontrol->private_value;
2333 	spin_unlock_irq(&trident->reg_lock);
2334 	return 0;
2335 }
2336 
2337 static int snd_trident_spdif_control_put(struct snd_kcontrol *kcontrol,
2338 					 struct snd_ctl_elem_value *ucontrol)
2339 {
2340 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2341 	unsigned char val;
2342 	int change;
2343 
2344 	val = ucontrol->value.integer.value[0] ? (unsigned char) kcontrol->private_value : 0x00;
2345 	spin_lock_irq(&trident->reg_lock);
2346 	/* S/PDIF C Channel bits 0-31 : 48khz, SCMS disabled */
2347 	change = trident->spdif_ctrl != val;
2348 	trident->spdif_ctrl = val;
2349 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2350 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0) {
2351 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2352 			outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
2353 		}
2354 	} else {
2355 		if (trident->spdif == NULL) {
2356 			unsigned int temp;
2357 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2358 			temp = inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & ~SPDIF_EN;
2359 			if (val)
2360 				temp |= SPDIF_EN;
2361 			outl(temp, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
2362 		}
2363 	}
2364 	spin_unlock_irq(&trident->reg_lock);
2365 	return change;
2366 }
2367 
2368 static struct snd_kcontrol_new snd_trident_spdif_control __devinitdata =
2369 {
2370 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2371 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),
2372 	.info =		snd_trident_spdif_control_info,
2373 	.get =		snd_trident_spdif_control_get,
2374 	.put =		snd_trident_spdif_control_put,
2375 	.private_value = 0x28,
2376 };
2377 
2378 /*---------------------------------------------------------------------------
2379     snd_trident_spdif_default
2380 
2381     Description: put/get the S/PDIF default settings
2382   ---------------------------------------------------------------------------*/
2383 
2384 static int snd_trident_spdif_default_info(struct snd_kcontrol *kcontrol,
2385 					  struct snd_ctl_elem_info *uinfo)
2386 {
2387 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2388 	uinfo->count = 1;
2389 	return 0;
2390 }
2391 
2392 static int snd_trident_spdif_default_get(struct snd_kcontrol *kcontrol,
2393 					 struct snd_ctl_elem_value *ucontrol)
2394 {
2395 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2396 
2397 	spin_lock_irq(&trident->reg_lock);
2398 	ucontrol->value.iec958.status[0] = (trident->spdif_bits >> 0) & 0xff;
2399 	ucontrol->value.iec958.status[1] = (trident->spdif_bits >> 8) & 0xff;
2400 	ucontrol->value.iec958.status[2] = (trident->spdif_bits >> 16) & 0xff;
2401 	ucontrol->value.iec958.status[3] = (trident->spdif_bits >> 24) & 0xff;
2402 	spin_unlock_irq(&trident->reg_lock);
2403 	return 0;
2404 }
2405 
2406 static int snd_trident_spdif_default_put(struct snd_kcontrol *kcontrol,
2407 					 struct snd_ctl_elem_value *ucontrol)
2408 {
2409 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2410 	unsigned int val;
2411 	int change;
2412 
2413 	val = (ucontrol->value.iec958.status[0] << 0) |
2414 	      (ucontrol->value.iec958.status[1] << 8) |
2415 	      (ucontrol->value.iec958.status[2] << 16) |
2416 	      (ucontrol->value.iec958.status[3] << 24);
2417 	spin_lock_irq(&trident->reg_lock);
2418 	change = trident->spdif_bits != val;
2419 	trident->spdif_bits = val;
2420 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2421 		if ((inb(TRID_REG(trident, NX_SPCTRL_SPCSO + 3)) & 0x10) == 0)
2422 			outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
2423 	} else {
2424 		if (trident->spdif == NULL)
2425 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2426 	}
2427 	spin_unlock_irq(&trident->reg_lock);
2428 	return change;
2429 }
2430 
2431 static struct snd_kcontrol_new snd_trident_spdif_default __devinitdata =
2432 {
2433 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2434 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2435 	.info =		snd_trident_spdif_default_info,
2436 	.get =		snd_trident_spdif_default_get,
2437 	.put =		snd_trident_spdif_default_put
2438 };
2439 
2440 /*---------------------------------------------------------------------------
2441     snd_trident_spdif_mask
2442 
2443     Description: put/get the S/PDIF mask
2444   ---------------------------------------------------------------------------*/
2445 
2446 static int snd_trident_spdif_mask_info(struct snd_kcontrol *kcontrol,
2447 				       struct snd_ctl_elem_info *uinfo)
2448 {
2449 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2450 	uinfo->count = 1;
2451 	return 0;
2452 }
2453 
2454 static int snd_trident_spdif_mask_get(struct snd_kcontrol *kcontrol,
2455 				      struct snd_ctl_elem_value *ucontrol)
2456 {
2457 	ucontrol->value.iec958.status[0] = 0xff;
2458 	ucontrol->value.iec958.status[1] = 0xff;
2459 	ucontrol->value.iec958.status[2] = 0xff;
2460 	ucontrol->value.iec958.status[3] = 0xff;
2461 	return 0;
2462 }
2463 
2464 static struct snd_kcontrol_new snd_trident_spdif_mask __devinitdata =
2465 {
2466 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2467 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2468 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
2469 	.info =		snd_trident_spdif_mask_info,
2470 	.get =		snd_trident_spdif_mask_get,
2471 };
2472 
2473 /*---------------------------------------------------------------------------
2474     snd_trident_spdif_stream
2475 
2476     Description: put/get the S/PDIF stream settings
2477   ---------------------------------------------------------------------------*/
2478 
2479 static int snd_trident_spdif_stream_info(struct snd_kcontrol *kcontrol,
2480 					 struct snd_ctl_elem_info *uinfo)
2481 {
2482 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2483 	uinfo->count = 1;
2484 	return 0;
2485 }
2486 
2487 static int snd_trident_spdif_stream_get(struct snd_kcontrol *kcontrol,
2488 					struct snd_ctl_elem_value *ucontrol)
2489 {
2490 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2491 
2492 	spin_lock_irq(&trident->reg_lock);
2493 	ucontrol->value.iec958.status[0] = (trident->spdif_pcm_bits >> 0) & 0xff;
2494 	ucontrol->value.iec958.status[1] = (trident->spdif_pcm_bits >> 8) & 0xff;
2495 	ucontrol->value.iec958.status[2] = (trident->spdif_pcm_bits >> 16) & 0xff;
2496 	ucontrol->value.iec958.status[3] = (trident->spdif_pcm_bits >> 24) & 0xff;
2497 	spin_unlock_irq(&trident->reg_lock);
2498 	return 0;
2499 }
2500 
2501 static int snd_trident_spdif_stream_put(struct snd_kcontrol *kcontrol,
2502 					struct snd_ctl_elem_value *ucontrol)
2503 {
2504 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2505 	unsigned int val;
2506 	int change;
2507 
2508 	val = (ucontrol->value.iec958.status[0] << 0) |
2509 	      (ucontrol->value.iec958.status[1] << 8) |
2510 	      (ucontrol->value.iec958.status[2] << 16) |
2511 	      (ucontrol->value.iec958.status[3] << 24);
2512 	spin_lock_irq(&trident->reg_lock);
2513 	change = trident->spdif_pcm_bits != val;
2514 	trident->spdif_pcm_bits = val;
2515 	if (trident->spdif != NULL) {
2516 		if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
2517 			outl(trident->spdif_pcm_bits, TRID_REG(trident, NX_SPCSTATUS));
2518 		} else {
2519 			outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
2520 		}
2521 	}
2522 	spin_unlock_irq(&trident->reg_lock);
2523 	return change;
2524 }
2525 
2526 static struct snd_kcontrol_new snd_trident_spdif_stream __devinitdata =
2527 {
2528 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2529 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2530 	.name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2531 	.info =		snd_trident_spdif_stream_info,
2532 	.get =		snd_trident_spdif_stream_get,
2533 	.put =		snd_trident_spdif_stream_put
2534 };
2535 
2536 /*---------------------------------------------------------------------------
2537     snd_trident_ac97_control
2538 
2539     Description: enable/disable rear path for ac97
2540   ---------------------------------------------------------------------------*/
2541 
2542 #define snd_trident_ac97_control_info	snd_ctl_boolean_mono_info
2543 
2544 static int snd_trident_ac97_control_get(struct snd_kcontrol *kcontrol,
2545 					struct snd_ctl_elem_value *ucontrol)
2546 {
2547 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2548 	unsigned char val;
2549 
2550 	spin_lock_irq(&trident->reg_lock);
2551 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2552 	ucontrol->value.integer.value[0] = (val & (1 << kcontrol->private_value)) ? 1 : 0;
2553 	spin_unlock_irq(&trident->reg_lock);
2554 	return 0;
2555 }
2556 
2557 static int snd_trident_ac97_control_put(struct snd_kcontrol *kcontrol,
2558 					struct snd_ctl_elem_value *ucontrol)
2559 {
2560 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2561 	unsigned char val;
2562 	int change = 0;
2563 
2564 	spin_lock_irq(&trident->reg_lock);
2565 	val = trident->ac97_ctrl = inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2566 	val &= ~(1 << kcontrol->private_value);
2567 	if (ucontrol->value.integer.value[0])
2568 		val |= 1 << kcontrol->private_value;
2569 	change = val != trident->ac97_ctrl;
2570 	trident->ac97_ctrl = val;
2571 	outl(trident->ac97_ctrl = val, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
2572 	spin_unlock_irq(&trident->reg_lock);
2573 	return change;
2574 }
2575 
2576 static struct snd_kcontrol_new snd_trident_ac97_rear_control __devinitdata =
2577 {
2578 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2579 	.name =         "Rear Path",
2580 	.info =		snd_trident_ac97_control_info,
2581 	.get =		snd_trident_ac97_control_get,
2582 	.put =		snd_trident_ac97_control_put,
2583 	.private_value = 4,
2584 };
2585 
2586 /*---------------------------------------------------------------------------
2587     snd_trident_vol_control
2588 
2589     Description: wave & music volume control
2590   ---------------------------------------------------------------------------*/
2591 
2592 static int snd_trident_vol_control_info(struct snd_kcontrol *kcontrol,
2593 					struct snd_ctl_elem_info *uinfo)
2594 {
2595 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2596 	uinfo->count = 2;
2597 	uinfo->value.integer.min = 0;
2598 	uinfo->value.integer.max = 255;
2599 	return 0;
2600 }
2601 
2602 static int snd_trident_vol_control_get(struct snd_kcontrol *kcontrol,
2603 				       struct snd_ctl_elem_value *ucontrol)
2604 {
2605 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2606 	unsigned int val;
2607 
2608 	val = trident->musicvol_wavevol;
2609 	ucontrol->value.integer.value[0] = 255 - ((val >> kcontrol->private_value) & 0xff);
2610 	ucontrol->value.integer.value[1] = 255 - ((val >> (kcontrol->private_value + 8)) & 0xff);
2611 	return 0;
2612 }
2613 
2614 static const DECLARE_TLV_DB_SCALE(db_scale_gvol, -6375, 25, 0);
2615 
2616 static int snd_trident_vol_control_put(struct snd_kcontrol *kcontrol,
2617 				       struct snd_ctl_elem_value *ucontrol)
2618 {
2619 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2620 	unsigned int val;
2621 	int change = 0;
2622 
2623 	spin_lock_irq(&trident->reg_lock);
2624 	val = trident->musicvol_wavevol;
2625 	val &= ~(0xffff << kcontrol->private_value);
2626 	val |= ((255 - (ucontrol->value.integer.value[0] & 0xff)) |
2627 	        ((255 - (ucontrol->value.integer.value[1] & 0xff)) << 8)) << kcontrol->private_value;
2628 	change = val != trident->musicvol_wavevol;
2629 	outl(trident->musicvol_wavevol = val, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
2630 	spin_unlock_irq(&trident->reg_lock);
2631 	return change;
2632 }
2633 
2634 static struct snd_kcontrol_new snd_trident_vol_music_control __devinitdata =
2635 {
2636 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2637 	.name =         "Music Playback Volume",
2638 	.info =		snd_trident_vol_control_info,
2639 	.get =		snd_trident_vol_control_get,
2640 	.put =		snd_trident_vol_control_put,
2641 	.private_value = 16,
2642 	.tlv = { .p = db_scale_gvol },
2643 };
2644 
2645 static struct snd_kcontrol_new snd_trident_vol_wave_control __devinitdata =
2646 {
2647 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2648 	.name =         "Wave Playback Volume",
2649 	.info =		snd_trident_vol_control_info,
2650 	.get =		snd_trident_vol_control_get,
2651 	.put =		snd_trident_vol_control_put,
2652 	.private_value = 0,
2653 	.tlv = { .p = db_scale_gvol },
2654 };
2655 
2656 /*---------------------------------------------------------------------------
2657     snd_trident_pcm_vol_control
2658 
2659     Description: PCM front volume control
2660   ---------------------------------------------------------------------------*/
2661 
2662 static int snd_trident_pcm_vol_control_info(struct snd_kcontrol *kcontrol,
2663 					    struct snd_ctl_elem_info *uinfo)
2664 {
2665 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2666 
2667 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2668 	uinfo->count = 1;
2669 	uinfo->value.integer.min = 0;
2670 	uinfo->value.integer.max = 255;
2671 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
2672 		uinfo->value.integer.max = 1023;
2673 	return 0;
2674 }
2675 
2676 static int snd_trident_pcm_vol_control_get(struct snd_kcontrol *kcontrol,
2677 					   struct snd_ctl_elem_value *ucontrol)
2678 {
2679 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2680 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2681 
2682 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2683 		ucontrol->value.integer.value[0] = 1023 - mix->vol;
2684 	} else {
2685 		ucontrol->value.integer.value[0] = 255 - (mix->vol>>2);
2686 	}
2687 	return 0;
2688 }
2689 
2690 static int snd_trident_pcm_vol_control_put(struct snd_kcontrol *kcontrol,
2691 					   struct snd_ctl_elem_value *ucontrol)
2692 {
2693 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2694 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2695 	unsigned int val;
2696 	int change = 0;
2697 
2698 	if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2699 		val = 1023 - (ucontrol->value.integer.value[0] & 1023);
2700 	} else {
2701 		val = (255 - (ucontrol->value.integer.value[0] & 255)) << 2;
2702 	}
2703 	spin_lock_irq(&trident->reg_lock);
2704 	change = val != mix->vol;
2705 	mix->vol = val;
2706 	if (mix->voice != NULL)
2707 		snd_trident_write_vol_reg(trident, mix->voice, val);
2708 	spin_unlock_irq(&trident->reg_lock);
2709 	return change;
2710 }
2711 
2712 static struct snd_kcontrol_new snd_trident_pcm_vol_control __devinitdata =
2713 {
2714 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2715 	.name =         "PCM Front Playback Volume",
2716 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2717 	.count =	32,
2718 	.info =		snd_trident_pcm_vol_control_info,
2719 	.get =		snd_trident_pcm_vol_control_get,
2720 	.put =		snd_trident_pcm_vol_control_put,
2721 	/* FIXME: no tlv yet */
2722 };
2723 
2724 /*---------------------------------------------------------------------------
2725     snd_trident_pcm_pan_control
2726 
2727     Description: PCM front pan control
2728   ---------------------------------------------------------------------------*/
2729 
2730 static int snd_trident_pcm_pan_control_info(struct snd_kcontrol *kcontrol,
2731 					    struct snd_ctl_elem_info *uinfo)
2732 {
2733 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2734 	uinfo->count = 1;
2735 	uinfo->value.integer.min = 0;
2736 	uinfo->value.integer.max = 127;
2737 	return 0;
2738 }
2739 
2740 static int snd_trident_pcm_pan_control_get(struct snd_kcontrol *kcontrol,
2741 					   struct snd_ctl_elem_value *ucontrol)
2742 {
2743 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2744 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2745 
2746 	ucontrol->value.integer.value[0] = mix->pan;
2747 	if (ucontrol->value.integer.value[0] & 0x40) {
2748 		ucontrol->value.integer.value[0] = (0x3f - (ucontrol->value.integer.value[0] & 0x3f));
2749 	} else {
2750 		ucontrol->value.integer.value[0] |= 0x40;
2751 	}
2752 	return 0;
2753 }
2754 
2755 static int snd_trident_pcm_pan_control_put(struct snd_kcontrol *kcontrol,
2756 					   struct snd_ctl_elem_value *ucontrol)
2757 {
2758 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2759 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2760 	unsigned char val;
2761 	int change = 0;
2762 
2763 	if (ucontrol->value.integer.value[0] & 0x40)
2764 		val = ucontrol->value.integer.value[0] & 0x3f;
2765 	else
2766 		val = (0x3f - (ucontrol->value.integer.value[0] & 0x3f)) | 0x40;
2767 	spin_lock_irq(&trident->reg_lock);
2768 	change = val != mix->pan;
2769 	mix->pan = val;
2770 	if (mix->voice != NULL)
2771 		snd_trident_write_pan_reg(trident, mix->voice, val);
2772 	spin_unlock_irq(&trident->reg_lock);
2773 	return change;
2774 }
2775 
2776 static struct snd_kcontrol_new snd_trident_pcm_pan_control __devinitdata =
2777 {
2778 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2779 	.name =         "PCM Pan Playback Control",
2780 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2781 	.count =	32,
2782 	.info =		snd_trident_pcm_pan_control_info,
2783 	.get =		snd_trident_pcm_pan_control_get,
2784 	.put =		snd_trident_pcm_pan_control_put,
2785 };
2786 
2787 /*---------------------------------------------------------------------------
2788     snd_trident_pcm_rvol_control
2789 
2790     Description: PCM reverb volume control
2791   ---------------------------------------------------------------------------*/
2792 
2793 static int snd_trident_pcm_rvol_control_info(struct snd_kcontrol *kcontrol,
2794 					     struct snd_ctl_elem_info *uinfo)
2795 {
2796 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2797 	uinfo->count = 1;
2798 	uinfo->value.integer.min = 0;
2799 	uinfo->value.integer.max = 127;
2800 	return 0;
2801 }
2802 
2803 static int snd_trident_pcm_rvol_control_get(struct snd_kcontrol *kcontrol,
2804 					    struct snd_ctl_elem_value *ucontrol)
2805 {
2806 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2807 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2808 
2809 	ucontrol->value.integer.value[0] = 127 - mix->rvol;
2810 	return 0;
2811 }
2812 
2813 static int snd_trident_pcm_rvol_control_put(struct snd_kcontrol *kcontrol,
2814 					    struct snd_ctl_elem_value *ucontrol)
2815 {
2816 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2817 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2818 	unsigned short val;
2819 	int change = 0;
2820 
2821 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2822 	spin_lock_irq(&trident->reg_lock);
2823 	change = val != mix->rvol;
2824 	mix->rvol = val;
2825 	if (mix->voice != NULL)
2826 		snd_trident_write_rvol_reg(trident, mix->voice, val);
2827 	spin_unlock_irq(&trident->reg_lock);
2828 	return change;
2829 }
2830 
2831 static const DECLARE_TLV_DB_SCALE(db_scale_crvol, -3175, 25, 1);
2832 
2833 static struct snd_kcontrol_new snd_trident_pcm_rvol_control __devinitdata =
2834 {
2835 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2836 	.name =         "PCM Reverb Playback Volume",
2837 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2838 	.count = 	32,
2839 	.info =		snd_trident_pcm_rvol_control_info,
2840 	.get =		snd_trident_pcm_rvol_control_get,
2841 	.put =		snd_trident_pcm_rvol_control_put,
2842 	.tlv = { .p = db_scale_crvol },
2843 };
2844 
2845 /*---------------------------------------------------------------------------
2846     snd_trident_pcm_cvol_control
2847 
2848     Description: PCM chorus volume control
2849   ---------------------------------------------------------------------------*/
2850 
2851 static int snd_trident_pcm_cvol_control_info(struct snd_kcontrol *kcontrol,
2852 					     struct snd_ctl_elem_info *uinfo)
2853 {
2854 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2855 	uinfo->count = 1;
2856 	uinfo->value.integer.min = 0;
2857 	uinfo->value.integer.max = 127;
2858 	return 0;
2859 }
2860 
2861 static int snd_trident_pcm_cvol_control_get(struct snd_kcontrol *kcontrol,
2862 					    struct snd_ctl_elem_value *ucontrol)
2863 {
2864 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2865 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2866 
2867 	ucontrol->value.integer.value[0] = 127 - mix->cvol;
2868 	return 0;
2869 }
2870 
2871 static int snd_trident_pcm_cvol_control_put(struct snd_kcontrol *kcontrol,
2872 					    struct snd_ctl_elem_value *ucontrol)
2873 {
2874 	struct snd_trident *trident = snd_kcontrol_chip(kcontrol);
2875 	struct snd_trident_pcm_mixer *mix = &trident->pcm_mixer[snd_ctl_get_ioffnum(kcontrol, &ucontrol->id)];
2876 	unsigned short val;
2877 	int change = 0;
2878 
2879 	val = 0x7f - (ucontrol->value.integer.value[0] & 0x7f);
2880 	spin_lock_irq(&trident->reg_lock);
2881 	change = val != mix->cvol;
2882 	mix->cvol = val;
2883 	if (mix->voice != NULL)
2884 		snd_trident_write_cvol_reg(trident, mix->voice, val);
2885 	spin_unlock_irq(&trident->reg_lock);
2886 	return change;
2887 }
2888 
2889 static struct snd_kcontrol_new snd_trident_pcm_cvol_control __devinitdata =
2890 {
2891 	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
2892 	.name =         "PCM Chorus Playback Volume",
2893 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2894 	.count =	32,
2895 	.info =		snd_trident_pcm_cvol_control_info,
2896 	.get =		snd_trident_pcm_cvol_control_get,
2897 	.put =		snd_trident_pcm_cvol_control_put,
2898 	.tlv = { .p = db_scale_crvol },
2899 };
2900 
2901 static void snd_trident_notify_pcm_change1(struct snd_card *card,
2902 					   struct snd_kcontrol *kctl,
2903 					   int num, int activate)
2904 {
2905 	struct snd_ctl_elem_id id;
2906 
2907 	if (! kctl)
2908 		return;
2909 	if (activate)
2910 		kctl->vd[num].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2911 	else
2912 		kctl->vd[num].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2913 	snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE |
2914 		       SNDRV_CTL_EVENT_MASK_INFO,
2915 		       snd_ctl_build_ioff(&id, kctl, num));
2916 }
2917 
2918 static void snd_trident_notify_pcm_change(struct snd_trident *trident,
2919 					  struct snd_trident_pcm_mixer *tmix,
2920 					  int num, int activate)
2921 {
2922 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_vol, num, activate);
2923 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_pan, num, activate);
2924 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_rvol, num, activate);
2925 	snd_trident_notify_pcm_change1(trident->card, trident->ctl_cvol, num, activate);
2926 }
2927 
2928 static int snd_trident_pcm_mixer_build(struct snd_trident *trident,
2929 				       struct snd_trident_voice *voice,
2930 				       struct snd_pcm_substream *substream)
2931 {
2932 	struct snd_trident_pcm_mixer *tmix;
2933 
2934 	if (snd_BUG_ON(!trident || !voice || !substream))
2935 		return -EINVAL;
2936 	tmix = &trident->pcm_mixer[substream->number];
2937 	tmix->voice = voice;
2938 	tmix->vol = T4D_DEFAULT_PCM_VOL;
2939 	tmix->pan = T4D_DEFAULT_PCM_PAN;
2940 	tmix->rvol = T4D_DEFAULT_PCM_RVOL;
2941 	tmix->cvol = T4D_DEFAULT_PCM_CVOL;
2942 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 1);
2943 	return 0;
2944 }
2945 
2946 static int snd_trident_pcm_mixer_free(struct snd_trident *trident, struct snd_trident_voice *voice, struct snd_pcm_substream *substream)
2947 {
2948 	struct snd_trident_pcm_mixer *tmix;
2949 
2950 	if (snd_BUG_ON(!trident || !substream))
2951 		return -EINVAL;
2952 	tmix = &trident->pcm_mixer[substream->number];
2953 	tmix->voice = NULL;
2954 	snd_trident_notify_pcm_change(trident, tmix, substream->number, 0);
2955 	return 0;
2956 }
2957 
2958 /*---------------------------------------------------------------------------
2959    snd_trident_mixer
2960 
2961    Description: This routine registers the 4DWave device for mixer support.
2962 
2963    Parameters:  trident - pointer to target device class for 4DWave.
2964 
2965    Returns:     None
2966 
2967   ---------------------------------------------------------------------------*/
2968 
2969 static int __devinit snd_trident_mixer(struct snd_trident * trident, int pcm_spdif_device)
2970 {
2971 	struct snd_ac97_template _ac97;
2972 	struct snd_card *card = trident->card;
2973 	struct snd_kcontrol *kctl;
2974 	struct snd_ctl_elem_value *uctl;
2975 	int idx, err, retries = 2;
2976 	static struct snd_ac97_bus_ops ops = {
2977 		.write = snd_trident_codec_write,
2978 		.read = snd_trident_codec_read,
2979 	};
2980 
2981 	uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
2982 	if (!uctl)
2983 		return -ENOMEM;
2984 
2985 	if ((err = snd_ac97_bus(trident->card, 0, &ops, NULL, &trident->ac97_bus)) < 0)
2986 		goto __out;
2987 
2988 	memset(&_ac97, 0, sizeof(_ac97));
2989 	_ac97.private_data = trident;
2990 	trident->ac97_detect = 1;
2991 
2992       __again:
2993 	if ((err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97)) < 0) {
2994 		if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
2995 			if ((err = snd_trident_sis_reset(trident)) < 0)
2996 				goto __out;
2997 			if (retries-- > 0)
2998 				goto __again;
2999 			err = -EIO;
3000 		}
3001 		goto __out;
3002 	}
3003 
3004 	/* secondary codec? */
3005 	if (trident->device == TRIDENT_DEVICE_ID_SI7018 &&
3006 	    (inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0) {
3007 		_ac97.num = 1;
3008 		err = snd_ac97_mixer(trident->ac97_bus, &_ac97, &trident->ac97_sec);
3009 		if (err < 0)
3010 			snd_printk(KERN_ERR "SI7018: the secondary codec - invalid access\n");
3011 #if 0	// only for my testing purpose --jk
3012 		{
3013 			struct snd_ac97 *mc97;
3014 			err = snd_ac97_modem(trident->card, &_ac97, &mc97);
3015 			if (err < 0)
3016 				snd_printk(KERN_ERR "snd_ac97_modem returned error %i\n", err);
3017 		}
3018 #endif
3019 	}
3020 
3021 	trident->ac97_detect = 0;
3022 
3023 	if (trident->device != TRIDENT_DEVICE_ID_SI7018) {
3024 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_wave_control, trident))) < 0)
3025 			goto __out;
3026 		kctl->put(kctl, uctl);
3027 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_vol_music_control, trident))) < 0)
3028 			goto __out;
3029 		kctl->put(kctl, uctl);
3030 		outl(trident->musicvol_wavevol = 0x00000000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3031 	} else {
3032 		outl(trident->musicvol_wavevol = 0xffff0000, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3033 	}
3034 
3035 	for (idx = 0; idx < 32; idx++) {
3036 		struct snd_trident_pcm_mixer *tmix;
3037 
3038 		tmix = &trident->pcm_mixer[idx];
3039 		tmix->voice = NULL;
3040 	}
3041 	if ((trident->ctl_vol = snd_ctl_new1(&snd_trident_pcm_vol_control, trident)) == NULL)
3042 		goto __nomem;
3043 	if ((err = snd_ctl_add(card, trident->ctl_vol)))
3044 		goto __out;
3045 
3046 	if ((trident->ctl_pan = snd_ctl_new1(&snd_trident_pcm_pan_control, trident)) == NULL)
3047 		goto __nomem;
3048 	if ((err = snd_ctl_add(card, trident->ctl_pan)))
3049 		goto __out;
3050 
3051 	if ((trident->ctl_rvol = snd_ctl_new1(&snd_trident_pcm_rvol_control, trident)) == NULL)
3052 		goto __nomem;
3053 	if ((err = snd_ctl_add(card, trident->ctl_rvol)))
3054 		goto __out;
3055 
3056 	if ((trident->ctl_cvol = snd_ctl_new1(&snd_trident_pcm_cvol_control, trident)) == NULL)
3057 		goto __nomem;
3058 	if ((err = snd_ctl_add(card, trident->ctl_cvol)))
3059 		goto __out;
3060 
3061 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3062 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_trident_ac97_rear_control, trident))) < 0)
3063 			goto __out;
3064 		kctl->put(kctl, uctl);
3065 	}
3066 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018) {
3067 
3068 		kctl = snd_ctl_new1(&snd_trident_spdif_control, trident);
3069 		if (kctl == NULL) {
3070 			err = -ENOMEM;
3071 			goto __out;
3072 		}
3073 		if (trident->ac97->ext_id & AC97_EI_SPDIF)
3074 			kctl->id.index++;
3075 		if (trident->ac97_sec && (trident->ac97_sec->ext_id & AC97_EI_SPDIF))
3076 			kctl->id.index++;
3077 		idx = kctl->id.index;
3078 		if ((err = snd_ctl_add(card, kctl)) < 0)
3079 			goto __out;
3080 		kctl->put(kctl, uctl);
3081 
3082 		kctl = snd_ctl_new1(&snd_trident_spdif_default, trident);
3083 		if (kctl == NULL) {
3084 			err = -ENOMEM;
3085 			goto __out;
3086 		}
3087 		kctl->id.index = idx;
3088 		kctl->id.device = pcm_spdif_device;
3089 		if ((err = snd_ctl_add(card, kctl)) < 0)
3090 			goto __out;
3091 
3092 		kctl = snd_ctl_new1(&snd_trident_spdif_mask, trident);
3093 		if (kctl == NULL) {
3094 			err = -ENOMEM;
3095 			goto __out;
3096 		}
3097 		kctl->id.index = idx;
3098 		kctl->id.device = pcm_spdif_device;
3099 		if ((err = snd_ctl_add(card, kctl)) < 0)
3100 			goto __out;
3101 
3102 		kctl = snd_ctl_new1(&snd_trident_spdif_stream, trident);
3103 		if (kctl == NULL) {
3104 			err = -ENOMEM;
3105 			goto __out;
3106 		}
3107 		kctl->id.index = idx;
3108 		kctl->id.device = pcm_spdif_device;
3109 		if ((err = snd_ctl_add(card, kctl)) < 0)
3110 			goto __out;
3111 		trident->spdif_pcm_ctl = kctl;
3112 	}
3113 
3114 	err = 0;
3115 	goto __out;
3116 
3117  __nomem:
3118 	err = -ENOMEM;
3119 
3120  __out:
3121 	kfree(uctl);
3122 
3123 	return err;
3124 }
3125 
3126 /*
3127  * gameport interface
3128  */
3129 
3130 #if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE))
3131 
3132 static unsigned char snd_trident_gameport_read(struct gameport *gameport)
3133 {
3134 	struct snd_trident *chip = gameport_get_port_data(gameport);
3135 
3136 	if (snd_BUG_ON(!chip))
3137 		return 0;
3138 	return inb(TRID_REG(chip, GAMEPORT_LEGACY));
3139 }
3140 
3141 static void snd_trident_gameport_trigger(struct gameport *gameport)
3142 {
3143 	struct snd_trident *chip = gameport_get_port_data(gameport);
3144 
3145 	if (snd_BUG_ON(!chip))
3146 		return;
3147 	outb(0xff, TRID_REG(chip, GAMEPORT_LEGACY));
3148 }
3149 
3150 static int snd_trident_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons)
3151 {
3152 	struct snd_trident *chip = gameport_get_port_data(gameport);
3153 	int i;
3154 
3155 	if (snd_BUG_ON(!chip))
3156 		return 0;
3157 
3158 	*buttons = (~inb(TRID_REG(chip, GAMEPORT_LEGACY)) >> 4) & 0xf;
3159 
3160 	for (i = 0; i < 4; i++) {
3161 		axes[i] = inw(TRID_REG(chip, GAMEPORT_AXES + i * 2));
3162 		if (axes[i] == 0xffff) axes[i] = -1;
3163 	}
3164 
3165         return 0;
3166 }
3167 
3168 static int snd_trident_gameport_open(struct gameport *gameport, int mode)
3169 {
3170 	struct snd_trident *chip = gameport_get_port_data(gameport);
3171 
3172 	if (snd_BUG_ON(!chip))
3173 		return 0;
3174 
3175 	switch (mode) {
3176 		case GAMEPORT_MODE_COOKED:
3177 			outb(GAMEPORT_MODE_ADC, TRID_REG(chip, GAMEPORT_GCR));
3178 			msleep(20);
3179 			return 0;
3180 		case GAMEPORT_MODE_RAW:
3181 			outb(0, TRID_REG(chip, GAMEPORT_GCR));
3182 			return 0;
3183 		default:
3184 			return -1;
3185 	}
3186 }
3187 
3188 int __devinit snd_trident_create_gameport(struct snd_trident *chip)
3189 {
3190 	struct gameport *gp;
3191 
3192 	chip->gameport = gp = gameport_allocate_port();
3193 	if (!gp) {
3194 		printk(KERN_ERR "trident: cannot allocate memory for gameport\n");
3195 		return -ENOMEM;
3196 	}
3197 
3198 	gameport_set_name(gp, "Trident 4DWave");
3199 	gameport_set_phys(gp, "pci%s/gameport0", pci_name(chip->pci));
3200 	gameport_set_dev_parent(gp, &chip->pci->dev);
3201 
3202 	gameport_set_port_data(gp, chip);
3203 	gp->fuzz = 64;
3204 	gp->read = snd_trident_gameport_read;
3205 	gp->trigger = snd_trident_gameport_trigger;
3206 	gp->cooked_read = snd_trident_gameport_cooked_read;
3207 	gp->open = snd_trident_gameport_open;
3208 
3209 	gameport_register_port(gp);
3210 
3211 	return 0;
3212 }
3213 
3214 static inline void snd_trident_free_gameport(struct snd_trident *chip)
3215 {
3216 	if (chip->gameport) {
3217 		gameport_unregister_port(chip->gameport);
3218 		chip->gameport = NULL;
3219 	}
3220 }
3221 #else
3222 int __devinit snd_trident_create_gameport(struct snd_trident *chip) { return -ENOSYS; }
3223 static inline void snd_trident_free_gameport(struct snd_trident *chip) { }
3224 #endif /* CONFIG_GAMEPORT */
3225 
3226 /*
3227  * delay for 1 tick
3228  */
3229 static inline void do_delay(struct snd_trident *chip)
3230 {
3231 	schedule_timeout_uninterruptible(1);
3232 }
3233 
3234 /*
3235  *  SiS reset routine
3236  */
3237 
3238 static int snd_trident_sis_reset(struct snd_trident *trident)
3239 {
3240 	unsigned long end_time;
3241 	unsigned int i;
3242 	int r;
3243 
3244 	r = trident->in_suspend ? 0 : 2;	/* count of retries */
3245       __si7018_retry:
3246 	pci_write_config_byte(trident->pci, 0x46, 0x04);	/* SOFTWARE RESET */
3247 	udelay(100);
3248 	pci_write_config_byte(trident->pci, 0x46, 0x00);
3249 	udelay(100);
3250 	/* disable AC97 GPIO interrupt */
3251 	outb(0x00, TRID_REG(trident, SI_AC97_GPIO));
3252 	/* initialize serial interface, force cold reset */
3253 	i = PCMOUT|SURROUT|CENTEROUT|LFEOUT|SECONDARY_ID|COLD_RESET;
3254 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3255 	udelay(1000);
3256 	/* remove cold reset */
3257 	i &= ~COLD_RESET;
3258 	outl(i, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3259 	udelay(2000);
3260 	/* wait, until the codec is ready */
3261 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3262 	do {
3263 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_PRIMARY_READY) != 0)
3264 			goto __si7018_ok;
3265 		do_delay(trident);
3266 	} while (time_after_eq(end_time, jiffies));
3267 	snd_printk(KERN_ERR "AC'97 codec ready error [0x%x]\n", inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)));
3268 	if (r-- > 0) {
3269 		end_time = jiffies + HZ;
3270 		do {
3271 			do_delay(trident);
3272 		} while (time_after_eq(end_time, jiffies));
3273 		goto __si7018_retry;
3274 	}
3275       __si7018_ok:
3276 	/* wait for the second codec */
3277 	do {
3278 		if ((inl(TRID_REG(trident, SI_SERIAL_INTF_CTRL)) & SI_AC97_SECONDARY_READY) != 0)
3279 			break;
3280 		do_delay(trident);
3281 	} while (time_after_eq(end_time, jiffies));
3282 	/* enable 64 channel mode */
3283 	outl(BANK_B_EN, TRID_REG(trident, T4D_LFO_GC_CIR));
3284 	return 0;
3285 }
3286 
3287 /*
3288  *  /proc interface
3289  */
3290 
3291 static void snd_trident_proc_read(struct snd_info_entry *entry,
3292 				  struct snd_info_buffer *buffer)
3293 {
3294 	struct snd_trident *trident = entry->private_data;
3295 	char *s;
3296 
3297 	switch (trident->device) {
3298 	case TRIDENT_DEVICE_ID_SI7018:
3299 		s = "SiS 7018 Audio";
3300 		break;
3301 	case TRIDENT_DEVICE_ID_DX:
3302 		s = "Trident 4DWave PCI DX";
3303 		break;
3304 	case TRIDENT_DEVICE_ID_NX:
3305 		s = "Trident 4DWave PCI NX";
3306 		break;
3307 	default:
3308 		s = "???";
3309 	}
3310 	snd_iprintf(buffer, "%s\n\n", s);
3311 	snd_iprintf(buffer, "Spurious IRQs    : %d\n", trident->spurious_irq_count);
3312 	snd_iprintf(buffer, "Spurious IRQ dlta: %d\n", trident->spurious_irq_max_delta);
3313 	if (trident->device == TRIDENT_DEVICE_ID_NX || trident->device == TRIDENT_DEVICE_ID_SI7018)
3314 		snd_iprintf(buffer, "IEC958 Mixer Out : %s\n", trident->spdif_ctrl == 0x28 ? "on" : "off");
3315 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3316 		snd_iprintf(buffer, "Rear Speakers    : %s\n", trident->ac97_ctrl & 0x00000010 ? "on" : "off");
3317 		if (trident->tlb.entries) {
3318 			snd_iprintf(buffer,"\nVirtual Memory\n");
3319 			snd_iprintf(buffer, "Memory Maximum : %d\n", trident->tlb.memhdr->size);
3320 			snd_iprintf(buffer, "Memory Used    : %d\n", trident->tlb.memhdr->used);
3321 			snd_iprintf(buffer, "Memory Free    : %d\n", snd_util_mem_avail(trident->tlb.memhdr));
3322 		}
3323 	}
3324 }
3325 
3326 static void __devinit snd_trident_proc_init(struct snd_trident * trident)
3327 {
3328 	struct snd_info_entry *entry;
3329 	const char *s = "trident";
3330 
3331 	if (trident->device == TRIDENT_DEVICE_ID_SI7018)
3332 		s = "sis7018";
3333 	if (! snd_card_proc_new(trident->card, s, &entry))
3334 		snd_info_set_text_ops(entry, trident, snd_trident_proc_read);
3335 }
3336 
3337 static int snd_trident_dev_free(struct snd_device *device)
3338 {
3339 	struct snd_trident *trident = device->device_data;
3340 	return snd_trident_free(trident);
3341 }
3342 
3343 /*---------------------------------------------------------------------------
3344    snd_trident_tlb_alloc
3345 
3346    Description: Allocate and set up the TLB page table on 4D NX.
3347 		Each entry has 4 bytes (physical PCI address).
3348 
3349    Parameters:  trident - pointer to target device class for 4DWave.
3350 
3351    Returns:     0 or negative error code
3352 
3353   ---------------------------------------------------------------------------*/
3354 
3355 static int __devinit snd_trident_tlb_alloc(struct snd_trident *trident)
3356 {
3357 	int i;
3358 
3359 	/* TLB array must be aligned to 16kB !!! so we allocate
3360 	   32kB region and correct offset when necessary */
3361 
3362 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3363 				2 * SNDRV_TRIDENT_MAX_PAGES * 4, &trident->tlb.buffer) < 0) {
3364 		snd_printk(KERN_ERR "trident: unable to allocate TLB buffer\n");
3365 		return -ENOMEM;
3366 	}
3367 	trident->tlb.entries = (unsigned int*)ALIGN((unsigned long)trident->tlb.buffer.area, SNDRV_TRIDENT_MAX_PAGES * 4);
3368 	trident->tlb.entries_dmaaddr = ALIGN(trident->tlb.buffer.addr, SNDRV_TRIDENT_MAX_PAGES * 4);
3369 	/* allocate shadow TLB page table (virtual addresses) */
3370 	trident->tlb.shadow_entries = vmalloc(SNDRV_TRIDENT_MAX_PAGES*sizeof(unsigned long));
3371 	if (trident->tlb.shadow_entries == NULL) {
3372 		snd_printk(KERN_ERR "trident: unable to allocate shadow TLB entries\n");
3373 		return -ENOMEM;
3374 	}
3375 	/* allocate and setup silent page and initialise TLB entries */
3376 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(trident->pci),
3377 				SNDRV_TRIDENT_PAGE_SIZE, &trident->tlb.silent_page) < 0) {
3378 		snd_printk(KERN_ERR "trident: unable to allocate silent page\n");
3379 		return -ENOMEM;
3380 	}
3381 	memset(trident->tlb.silent_page.area, 0, SNDRV_TRIDENT_PAGE_SIZE);
3382 	for (i = 0; i < SNDRV_TRIDENT_MAX_PAGES; i++) {
3383 		trident->tlb.entries[i] = cpu_to_le32(trident->tlb.silent_page.addr & ~(SNDRV_TRIDENT_PAGE_SIZE-1));
3384 		trident->tlb.shadow_entries[i] = (unsigned long)trident->tlb.silent_page.area;
3385 	}
3386 
3387 	/* use emu memory block manager code to manage tlb page allocation */
3388 	trident->tlb.memhdr = snd_util_memhdr_new(SNDRV_TRIDENT_PAGE_SIZE * SNDRV_TRIDENT_MAX_PAGES);
3389 	if (trident->tlb.memhdr == NULL)
3390 		return -ENOMEM;
3391 
3392 	trident->tlb.memhdr->block_extra_size = sizeof(struct snd_trident_memblk_arg);
3393 	return 0;
3394 }
3395 
3396 /*
3397  * initialize 4D DX chip
3398  */
3399 
3400 static void snd_trident_stop_all_voices(struct snd_trident *trident)
3401 {
3402 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_A));
3403 	outl(0xffffffff, TRID_REG(trident, T4D_STOP_B));
3404 	outl(0, TRID_REG(trident, T4D_AINTEN_A));
3405 	outl(0, TRID_REG(trident, T4D_AINTEN_B));
3406 }
3407 
3408 static int snd_trident_4d_dx_init(struct snd_trident *trident)
3409 {
3410 	struct pci_dev *pci = trident->pci;
3411 	unsigned long end_time;
3412 
3413 	/* reset the legacy configuration and whole audio/wavetable block */
3414 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3415 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3416 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3417 	pci_write_config_byte(pci, 0x46, 4); /* reset */
3418 	udelay(100);
3419 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3420 	udelay(100);
3421 
3422 	/* warm reset of the AC'97 codec */
3423 	outl(0x00000001, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3424 	udelay(100);
3425 	outl(0x00000000, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3426 	/* DAC on, disable SB IRQ and try to force ADC valid signal */
3427 	trident->ac97_ctrl = 0x0000004a;
3428 	outl(trident->ac97_ctrl, TRID_REG(trident, DX_ACR2_AC97_COM_STAT));
3429 	/* wait, until the codec is ready */
3430 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3431 	do {
3432 		if ((inl(TRID_REG(trident, DX_ACR2_AC97_COM_STAT)) & 0x0010) != 0)
3433 			goto __dx_ok;
3434 		do_delay(trident);
3435 	} while (time_after_eq(end_time, jiffies));
3436 	snd_printk(KERN_ERR "AC'97 codec ready error\n");
3437 	return -EIO;
3438 
3439  __dx_ok:
3440 	snd_trident_stop_all_voices(trident);
3441 
3442 	return 0;
3443 }
3444 
3445 /*
3446  * initialize 4D NX chip
3447  */
3448 static int snd_trident_4d_nx_init(struct snd_trident *trident)
3449 {
3450 	struct pci_dev *pci = trident->pci;
3451 	unsigned long end_time;
3452 
3453 	/* reset the legacy configuration and whole audio/wavetable block */
3454 	pci_write_config_dword(pci, 0x40, 0);	/* DDMA */
3455 	pci_write_config_byte(pci, 0x44, 0);	/* ports */
3456 	pci_write_config_byte(pci, 0x45, 0);	/* Legacy DMA */
3457 
3458 	pci_write_config_byte(pci, 0x46, 1); /* reset */
3459 	udelay(100);
3460 	pci_write_config_byte(pci, 0x46, 0); /* release reset */
3461 	udelay(100);
3462 
3463 	/* warm reset of the AC'97 codec */
3464 	outl(0x00000001, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3465 	udelay(100);
3466 	outl(0x00000000, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3467 	/* wait, until the codec is ready */
3468 	end_time = (jiffies + (HZ * 3) / 4) + 1;
3469 	do {
3470 		if ((inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)) & 0x0008) != 0)
3471 			goto __nx_ok;
3472 		do_delay(trident);
3473 	} while (time_after_eq(end_time, jiffies));
3474 	snd_printk(KERN_ERR "AC'97 codec ready error [0x%x]\n", inl(TRID_REG(trident, NX_ACR0_AC97_COM_STAT)));
3475 	return -EIO;
3476 
3477  __nx_ok:
3478 	/* DAC on */
3479 	trident->ac97_ctrl = 0x00000002;
3480 	outl(trident->ac97_ctrl, TRID_REG(trident, NX_ACR0_AC97_COM_STAT));
3481 	/* disable SB IRQ */
3482 	outl(NX_SB_IRQ_DISABLE, TRID_REG(trident, T4D_MISCINT));
3483 
3484 	snd_trident_stop_all_voices(trident);
3485 
3486 	if (trident->tlb.entries != NULL) {
3487 		unsigned int i;
3488 		/* enable virtual addressing via TLB */
3489 		i = trident->tlb.entries_dmaaddr;
3490 		i |= 0x00000001;
3491 		outl(i, TRID_REG(trident, NX_TLBC));
3492 	} else {
3493 		outl(0, TRID_REG(trident, NX_TLBC));
3494 	}
3495 	/* initialize S/PDIF */
3496 	outl(trident->spdif_bits, TRID_REG(trident, NX_SPCSTATUS));
3497 	outb(trident->spdif_ctrl, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3498 
3499 	return 0;
3500 }
3501 
3502 /*
3503  * initialize sis7018 chip
3504  */
3505 static int snd_trident_sis_init(struct snd_trident *trident)
3506 {
3507 	int err;
3508 
3509 	if ((err = snd_trident_sis_reset(trident)) < 0)
3510 		return err;
3511 
3512 	snd_trident_stop_all_voices(trident);
3513 
3514 	/* initialize S/PDIF */
3515 	outl(trident->spdif_bits, TRID_REG(trident, SI_SPDIF_CS));
3516 
3517 	return 0;
3518 }
3519 
3520 /*---------------------------------------------------------------------------
3521    snd_trident_create
3522 
3523    Description: This routine will create the device specific class for
3524                 the 4DWave card. It will also perform basic initialization.
3525 
3526    Parameters:  card  - which card to create
3527                 pci   - interface to PCI bus resource info
3528                 dma1ptr - playback dma buffer
3529                 dma2ptr - capture dma buffer
3530                 irqptr  -  interrupt resource info
3531 
3532    Returns:     4DWave device class private data
3533 
3534   ---------------------------------------------------------------------------*/
3535 
3536 int __devinit snd_trident_create(struct snd_card *card,
3537 		       struct pci_dev *pci,
3538 		       int pcm_streams,
3539 		       int pcm_spdif_device,
3540 		       int max_wavetable_size,
3541 		       struct snd_trident ** rtrident)
3542 {
3543 	struct snd_trident *trident;
3544 	int i, err;
3545 	struct snd_trident_voice *voice;
3546 	struct snd_trident_pcm_mixer *tmix;
3547 	static struct snd_device_ops ops = {
3548 		.dev_free =	snd_trident_dev_free,
3549 	};
3550 
3551 	*rtrident = NULL;
3552 
3553 	/* enable PCI device */
3554 	if ((err = pci_enable_device(pci)) < 0)
3555 		return err;
3556 	/* check, if we can restrict PCI DMA transfers to 30 bits */
3557 	if (pci_set_dma_mask(pci, DMA_30BIT_MASK) < 0 ||
3558 	    pci_set_consistent_dma_mask(pci, DMA_30BIT_MASK) < 0) {
3559 		snd_printk(KERN_ERR "architecture does not support 30bit PCI busmaster DMA\n");
3560 		pci_disable_device(pci);
3561 		return -ENXIO;
3562 	}
3563 
3564 	trident = kzalloc(sizeof(*trident), GFP_KERNEL);
3565 	if (trident == NULL) {
3566 		pci_disable_device(pci);
3567 		return -ENOMEM;
3568 	}
3569 	trident->device = (pci->vendor << 16) | pci->device;
3570 	trident->card = card;
3571 	trident->pci = pci;
3572 	spin_lock_init(&trident->reg_lock);
3573 	spin_lock_init(&trident->event_lock);
3574 	spin_lock_init(&trident->voice_alloc);
3575 	if (pcm_streams < 1)
3576 		pcm_streams = 1;
3577 	if (pcm_streams > 32)
3578 		pcm_streams = 32;
3579 	trident->ChanPCM = pcm_streams;
3580 	if (max_wavetable_size < 0 )
3581 		max_wavetable_size = 0;
3582 	trident->synth.max_size = max_wavetable_size * 1024;
3583 	trident->irq = -1;
3584 
3585 	trident->midi_port = TRID_REG(trident, T4D_MPU401_BASE);
3586 	pci_set_master(pci);
3587 
3588 	if ((err = pci_request_regions(pci, "Trident Audio")) < 0) {
3589 		kfree(trident);
3590 		pci_disable_device(pci);
3591 		return err;
3592 	}
3593 	trident->port = pci_resource_start(pci, 0);
3594 
3595 	if (request_irq(pci->irq, snd_trident_interrupt, IRQF_SHARED,
3596 			"Trident Audio", trident)) {
3597 		snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
3598 		snd_trident_free(trident);
3599 		return -EBUSY;
3600 	}
3601 	trident->irq = pci->irq;
3602 
3603 	/* allocate 16k-aligned TLB for NX cards */
3604 	trident->tlb.entries = NULL;
3605 	trident->tlb.buffer.area = NULL;
3606 	if (trident->device == TRIDENT_DEVICE_ID_NX) {
3607 		if ((err = snd_trident_tlb_alloc(trident)) < 0) {
3608 			snd_trident_free(trident);
3609 			return err;
3610 		}
3611 	}
3612 
3613 	trident->spdif_bits = trident->spdif_pcm_bits = SNDRV_PCM_DEFAULT_CON_SPDIF;
3614 
3615 	/* initialize chip */
3616 	switch (trident->device) {
3617 	case TRIDENT_DEVICE_ID_DX:
3618 		err = snd_trident_4d_dx_init(trident);
3619 		break;
3620 	case TRIDENT_DEVICE_ID_NX:
3621 		err = snd_trident_4d_nx_init(trident);
3622 		break;
3623 	case TRIDENT_DEVICE_ID_SI7018:
3624 		err = snd_trident_sis_init(trident);
3625 		break;
3626 	default:
3627 		snd_BUG();
3628 		break;
3629 	}
3630 	if (err < 0) {
3631 		snd_trident_free(trident);
3632 		return err;
3633 	}
3634 
3635 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, trident, &ops)) < 0) {
3636 		snd_trident_free(trident);
3637 		return err;
3638 	}
3639 
3640 	if ((err = snd_trident_mixer(trident, pcm_spdif_device)) < 0)
3641 		return err;
3642 
3643 	/* initialise synth voices */
3644 	for (i = 0; i < 64; i++) {
3645 		voice = &trident->synth.voices[i];
3646 		voice->number = i;
3647 		voice->trident = trident;
3648 	}
3649 	/* initialize pcm mixer entries */
3650 	for (i = 0; i < 32; i++) {
3651 		tmix = &trident->pcm_mixer[i];
3652 		tmix->vol = T4D_DEFAULT_PCM_VOL;
3653 		tmix->pan = T4D_DEFAULT_PCM_PAN;
3654 		tmix->rvol = T4D_DEFAULT_PCM_RVOL;
3655 		tmix->cvol = T4D_DEFAULT_PCM_CVOL;
3656 	}
3657 
3658 	snd_trident_enable_eso(trident);
3659 
3660 	snd_trident_proc_init(trident);
3661 	snd_card_set_dev(card, &pci->dev);
3662 	*rtrident = trident;
3663 	return 0;
3664 }
3665 
3666 /*---------------------------------------------------------------------------
3667    snd_trident_free
3668 
3669    Description: This routine will free the device specific class for
3670                 the 4DWave card.
3671 
3672    Parameters:  trident  - device specific private data for 4DWave card
3673 
3674    Returns:     None.
3675 
3676   ---------------------------------------------------------------------------*/
3677 
3678 static int snd_trident_free(struct snd_trident *trident)
3679 {
3680 	snd_trident_free_gameport(trident);
3681 	snd_trident_disable_eso(trident);
3682 	// Disable S/PDIF out
3683 	if (trident->device == TRIDENT_DEVICE_ID_NX)
3684 		outb(0x00, TRID_REG(trident, NX_SPCTRL_SPCSO + 3));
3685 	else if (trident->device == TRIDENT_DEVICE_ID_SI7018) {
3686 		outl(0, TRID_REG(trident, SI_SERIAL_INTF_CTRL));
3687 	}
3688 	if (trident->irq >= 0)
3689 		free_irq(trident->irq, trident);
3690 	if (trident->tlb.buffer.area) {
3691 		outl(0, TRID_REG(trident, NX_TLBC));
3692 		if (trident->tlb.memhdr)
3693 			snd_util_memhdr_free(trident->tlb.memhdr);
3694 		if (trident->tlb.silent_page.area)
3695 			snd_dma_free_pages(&trident->tlb.silent_page);
3696 		vfree(trident->tlb.shadow_entries);
3697 		snd_dma_free_pages(&trident->tlb.buffer);
3698 	}
3699 	pci_release_regions(trident->pci);
3700 	pci_disable_device(trident->pci);
3701 	kfree(trident);
3702 	return 0;
3703 }
3704 
3705 /*---------------------------------------------------------------------------
3706    snd_trident_interrupt
3707 
3708    Description: ISR for Trident 4DWave device
3709 
3710    Parameters:  trident  - device specific private data for 4DWave card
3711 
3712    Problems:    It seems that Trident chips generates interrupts more than
3713                 one time in special cases. The spurious interrupts are
3714                 detected via sample timer (T4D_STIMER) and computing
3715                 corresponding delta value. The limits are detected with
3716                 the method try & fail so it is possible that it won't
3717                 work on all computers. [jaroslav]
3718 
3719    Returns:     None.
3720 
3721   ---------------------------------------------------------------------------*/
3722 
3723 static irqreturn_t snd_trident_interrupt(int irq, void *dev_id)
3724 {
3725 	struct snd_trident *trident = dev_id;
3726 	unsigned int audio_int, chn_int, stimer, channel, mask, tmp;
3727 	int delta;
3728 	struct snd_trident_voice *voice;
3729 
3730 	audio_int = inl(TRID_REG(trident, T4D_MISCINT));
3731 	if ((audio_int & (ADDRESS_IRQ|MPU401_IRQ)) == 0)
3732 		return IRQ_NONE;
3733 	if (audio_int & ADDRESS_IRQ) {
3734 		// get interrupt status for all channels
3735 		spin_lock(&trident->reg_lock);
3736 		stimer = inl(TRID_REG(trident, T4D_STIMER)) & 0x00ffffff;
3737 		chn_int = inl(TRID_REG(trident, T4D_AINT_A));
3738 		if (chn_int == 0)
3739 			goto __skip1;
3740 		outl(chn_int, TRID_REG(trident, T4D_AINT_A));	/* ack */
3741 	      __skip1:
3742 		chn_int = inl(TRID_REG(trident, T4D_AINT_B));
3743 		if (chn_int == 0)
3744 			goto __skip2;
3745 		for (channel = 63; channel >= 32; channel--) {
3746 			mask = 1 << (channel&0x1f);
3747 			if ((chn_int & mask) == 0)
3748 				continue;
3749 			voice = &trident->synth.voices[channel];
3750 			if (!voice->pcm || voice->substream == NULL) {
3751 				outl(mask, TRID_REG(trident, T4D_STOP_B));
3752 				continue;
3753 			}
3754 			delta = (int)stimer - (int)voice->stimer;
3755 			if (delta < 0)
3756 				delta = -delta;
3757 			if ((unsigned int)delta < voice->spurious_threshold) {
3758 				/* do some statistics here */
3759 				trident->spurious_irq_count++;
3760 				if (trident->spurious_irq_max_delta < (unsigned int)delta)
3761 					trident->spurious_irq_max_delta = delta;
3762 				continue;
3763 			}
3764 			voice->stimer = stimer;
3765 			if (voice->isync) {
3766 				if (!voice->isync3) {
3767 					tmp = inw(TRID_REG(trident, T4D_SBBL_SBCL));
3768 					if (trident->bDMAStart & 0x40)
3769 						tmp >>= 1;
3770 					if (tmp > 0)
3771 						tmp = voice->isync_max - tmp;
3772 				} else {
3773 					tmp = inl(TRID_REG(trident, NX_SPCTRL_SPCSO)) & 0x00ffffff;
3774 				}
3775 				if (tmp < voice->isync_mark) {
3776 					if (tmp > 0x10)
3777 						tmp = voice->isync_ESO - 7;
3778 					else
3779 						tmp = voice->isync_ESO + 2;
3780 					/* update ESO for IRQ voice to preserve sync */
3781 					snd_trident_stop_voice(trident, voice->number);
3782 					snd_trident_write_eso_reg(trident, voice, tmp);
3783 					snd_trident_start_voice(trident, voice->number);
3784 				}
3785 			} else if (voice->isync2) {
3786 				voice->isync2 = 0;
3787 				/* write original ESO and update CSO for IRQ voice to preserve sync */
3788 				snd_trident_stop_voice(trident, voice->number);
3789 				snd_trident_write_cso_reg(trident, voice, voice->isync_mark);
3790 				snd_trident_write_eso_reg(trident, voice, voice->ESO);
3791 				snd_trident_start_voice(trident, voice->number);
3792 			}
3793 #if 0
3794 			if (voice->extra) {
3795 				/* update CSO for extra voice to preserve sync */
3796 				snd_trident_stop_voice(trident, voice->extra->number);
3797 				snd_trident_write_cso_reg(trident, voice->extra, 0);
3798 				snd_trident_start_voice(trident, voice->extra->number);
3799 			}
3800 #endif
3801 			spin_unlock(&trident->reg_lock);
3802 			snd_pcm_period_elapsed(voice->substream);
3803 			spin_lock(&trident->reg_lock);
3804 		}
3805 		outl(chn_int, TRID_REG(trident, T4D_AINT_B));	/* ack */
3806 	      __skip2:
3807 		spin_unlock(&trident->reg_lock);
3808 	}
3809 	if (audio_int & MPU401_IRQ) {
3810 		if (trident->rmidi) {
3811 			snd_mpu401_uart_interrupt(irq, trident->rmidi->private_data);
3812 		} else {
3813 			inb(TRID_REG(trident, T4D_MPUR0));
3814 		}
3815 	}
3816 	// outl((ST_TARGET_REACHED | MIXER_OVERFLOW | MIXER_UNDERFLOW), TRID_REG(trident, T4D_MISCINT));
3817 	return IRQ_HANDLED;
3818 }
3819 
3820 struct snd_trident_voice *snd_trident_alloc_voice(struct snd_trident * trident, int type, int client, int port)
3821 {
3822 	struct snd_trident_voice *pvoice;
3823 	unsigned long flags;
3824 	int idx;
3825 
3826 	spin_lock_irqsave(&trident->voice_alloc, flags);
3827 	if (type == SNDRV_TRIDENT_VOICE_TYPE_PCM) {
3828 		idx = snd_trident_allocate_pcm_channel(trident);
3829 		if(idx < 0) {
3830 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3831 			return NULL;
3832 		}
3833 		pvoice = &trident->synth.voices[idx];
3834 		pvoice->use = 1;
3835 		pvoice->pcm = 1;
3836 		pvoice->capture = 0;
3837 		pvoice->spdif = 0;
3838 		pvoice->memblk = NULL;
3839 		pvoice->substream = NULL;
3840 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3841 		return pvoice;
3842 	}
3843 	if (type == SNDRV_TRIDENT_VOICE_TYPE_SYNTH) {
3844 		idx = snd_trident_allocate_synth_channel(trident);
3845 		if(idx < 0) {
3846 			spin_unlock_irqrestore(&trident->voice_alloc, flags);
3847 			return NULL;
3848 		}
3849 		pvoice = &trident->synth.voices[idx];
3850 		pvoice->use = 1;
3851 		pvoice->synth = 1;
3852 		pvoice->client = client;
3853 		pvoice->port = port;
3854 		pvoice->memblk = NULL;
3855 		spin_unlock_irqrestore(&trident->voice_alloc, flags);
3856 		return pvoice;
3857 	}
3858 	if (type == SNDRV_TRIDENT_VOICE_TYPE_MIDI) {
3859 	}
3860 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3861 	return NULL;
3862 }
3863 
3864 EXPORT_SYMBOL(snd_trident_alloc_voice);
3865 
3866 void snd_trident_free_voice(struct snd_trident * trident, struct snd_trident_voice *voice)
3867 {
3868 	unsigned long flags;
3869 	void (*private_free)(struct snd_trident_voice *);
3870 	void *private_data;
3871 
3872 	if (voice == NULL || !voice->use)
3873 		return;
3874 	snd_trident_clear_voices(trident, voice->number, voice->number);
3875 	spin_lock_irqsave(&trident->voice_alloc, flags);
3876 	private_free = voice->private_free;
3877 	private_data = voice->private_data;
3878 	voice->private_free = NULL;
3879 	voice->private_data = NULL;
3880 	if (voice->pcm)
3881 		snd_trident_free_pcm_channel(trident, voice->number);
3882 	if (voice->synth)
3883 		snd_trident_free_synth_channel(trident, voice->number);
3884 	voice->use = voice->pcm = voice->synth = voice->midi = 0;
3885 	voice->capture = voice->spdif = 0;
3886 	voice->sample_ops = NULL;
3887 	voice->substream = NULL;
3888 	voice->extra = NULL;
3889 	spin_unlock_irqrestore(&trident->voice_alloc, flags);
3890 	if (private_free)
3891 		private_free(voice);
3892 }
3893 
3894 EXPORT_SYMBOL(snd_trident_free_voice);
3895 
3896 static void snd_trident_clear_voices(struct snd_trident * trident, unsigned short v_min, unsigned short v_max)
3897 {
3898 	unsigned int i, val, mask[2] = { 0, 0 };
3899 
3900 	if (snd_BUG_ON(v_min > 63 || v_max > 63))
3901 		return;
3902 	for (i = v_min; i <= v_max; i++)
3903 		mask[i >> 5] |= 1 << (i & 0x1f);
3904 	if (mask[0]) {
3905 		outl(mask[0], TRID_REG(trident, T4D_STOP_A));
3906 		val = inl(TRID_REG(trident, T4D_AINTEN_A));
3907 		outl(val & ~mask[0], TRID_REG(trident, T4D_AINTEN_A));
3908 	}
3909 	if (mask[1]) {
3910 		outl(mask[1], TRID_REG(trident, T4D_STOP_B));
3911 		val = inl(TRID_REG(trident, T4D_AINTEN_B));
3912 		outl(val & ~mask[1], TRID_REG(trident, T4D_AINTEN_B));
3913 	}
3914 }
3915 
3916 #ifdef CONFIG_PM
3917 int snd_trident_suspend(struct pci_dev *pci, pm_message_t state)
3918 {
3919 	struct snd_card *card = pci_get_drvdata(pci);
3920 	struct snd_trident *trident = card->private_data;
3921 
3922 	trident->in_suspend = 1;
3923 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
3924 	snd_pcm_suspend_all(trident->pcm);
3925 	snd_pcm_suspend_all(trident->foldback);
3926 	snd_pcm_suspend_all(trident->spdif);
3927 
3928 	snd_ac97_suspend(trident->ac97);
3929 	snd_ac97_suspend(trident->ac97_sec);
3930 
3931 	pci_disable_device(pci);
3932 	pci_save_state(pci);
3933 	pci_set_power_state(pci, pci_choose_state(pci, state));
3934 	return 0;
3935 }
3936 
3937 int snd_trident_resume(struct pci_dev *pci)
3938 {
3939 	struct snd_card *card = pci_get_drvdata(pci);
3940 	struct snd_trident *trident = card->private_data;
3941 
3942 	pci_set_power_state(pci, PCI_D0);
3943 	pci_restore_state(pci);
3944 	if (pci_enable_device(pci) < 0) {
3945 		printk(KERN_ERR "trident: pci_enable_device failed, "
3946 		       "disabling device\n");
3947 		snd_card_disconnect(card);
3948 		return -EIO;
3949 	}
3950 	pci_set_master(pci);
3951 
3952 	switch (trident->device) {
3953 	case TRIDENT_DEVICE_ID_DX:
3954 		snd_trident_4d_dx_init(trident);
3955 		break;
3956 	case TRIDENT_DEVICE_ID_NX:
3957 		snd_trident_4d_nx_init(trident);
3958 		break;
3959 	case TRIDENT_DEVICE_ID_SI7018:
3960 		snd_trident_sis_init(trident);
3961 		break;
3962 	}
3963 
3964 	snd_ac97_resume(trident->ac97);
3965 	snd_ac97_resume(trident->ac97_sec);
3966 
3967 	/* restore some registers */
3968 	outl(trident->musicvol_wavevol, TRID_REG(trident, T4D_MUSICVOL_WAVEVOL));
3969 
3970 	snd_trident_enable_eso(trident);
3971 
3972 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
3973 	trident->in_suspend = 0;
3974 	return 0;
3975 }
3976 #endif /* CONFIG_PM */
3977